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Cosmetic Ingredient Dictionary

AbsorbentFilm-Forming/Holding AgentsSilicones
Antibacterial/Anti-AcneFragrance: Synthetic and Fragrant Plant ExtractsSkin-Identical Ingredients
Antibacterial/AntioxidantsIrritantsSlip Agents
Anti-IrritantsLeave-On ExfoliantSunscreen Actives
AntioxidantsMiscellaneousSurfactants/Detergent Cleansing Agents
Cell-Communicating IngredientsPlant ExtractsThickeners
Coloring Agents/PigmentsPrescription DrugsThickeners/Emulsifiers
EmollientsPreservativesVitamins
EmulsifiersScrub Agents

Results for Irritants
Rating ↓ By Ingredient ↓
Poor
acetic acid. Acid found in vinegar, some fruits, and human sweat. It can be a skin irritant and drying to skin,... Read More
Categories: Irritants
Neutral
alcohol. A group of organic compounds that have a vast range of forms and uses in cosmetics. In some benign... Read More
Categories: Emollients, Surfactants/Detergent Cleansing Agents, Absorbent, Irritants
Poor
anise. Also known as aniseed, it can have potent antioxidant and antibacterial properties (Source:... Read More
Categories: Antibacterial/Anti-Acne, Antioxidants, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
balm mint extract. Extract derived from a fragrant plant; it poses some risk of skin irritation. It also has some... Read More
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
barium sulfate. Mineral used as a whitening agent in cosmetics. It can be a skin irritant.
Categories: Coloring Agents/Pigments, Irritants
Poor
black pepper extract and oil. Used topically as a counter-irritant, which means it can cause significant skin irritation (Source:... Read More
Categories: Plant Extracts, Irritants
Poor
borate. Group of compounds used in cosmetics in small quantities primarily as pH adjusters (they have a pH... Read More
Categories: Antibacterial/Anti-Acne, Irritants
Poor
borax. Also known as sodium borate decahydrate, borax is a mineral composed of sodium, boron, oxygen, and... Read More
Categories: Irritants, Preservatives
Poor
cajeputi oil. See Melaleuca cajeputi oil
Categories: Plant Extracts, Irritants
Poor
calamine. Preparation of zinc carbonate, colored with ferric oxide (a form of rust). Zinc carbonate is a... Read More
Categories: Miscellaneous, Irritants
Poor
camphor. Aromatic substance obtained from the wood of a tree common to Southeast Asia, Cinnamomum camphora,... Read More
Categories: Plant Extracts, Irritants
Poor
capsaicin. Component of capsicum. When used topically, capsaicin can prevent the transmission of pain. It is... Read More
Categories: Plant Extracts, Irritants
Poor
capsicum. Large group of plants consisting primarily of the pepper family, including chili peppers and... Read More
Categories: Plant Extracts, Irritants
Poor
capsicum oleoresin. Fatty resin derived from capsicum plants. It can be a skin irritant and should not be applied to... Read More
Categories: Plant Extracts, Irritants
Poor
carvone. Essential oil used as a flavoring agent and fragrance component in cosmetics. It can be a... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
chlorhexidine. Topical antiseptic, it can cause irritation (Source: Toxicology in Vitro, August–October... Read More
Categories: Antibacterial/Anti-Acne, Irritants
Great
Chrysanthemum parthenium extract. See feverfew extract
Categories: Plant Extracts, Irritants
Poor
Cinnamomum. See cinnamon
Categories: Antioxidants, Antibacterial/Anti-Acne, Plant Extracts, Irritants
Poor
Cinnamomum camphora. See camphor
Categories: Plant Extracts, Irritants
Poor
cinnamon. Can have antimicrobial and antioxidant properties (Sources: Cutaneous and Ocular Toxicology, March... Read More
Categories: Antioxidants, Antibacterial/Anti-Acne, Plant Extracts, Irritants
Poor
Citrullus colocynthis. Bitter apple; considered a skin irritant.
Categories: Plant Extracts, Irritants
Poor
Citrus amara. See orange blossom
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Citrus aurantifolia. See lime (oil or extract)
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Citrus aurantium. See orange blossom
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Citrus aurantium extract. Bitter orange extract. It can have antioxidant properties when eaten (Source: Journal of... Read More
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Citrus medica limonium. See lemon
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
clary oil. Used as fragrance; can be a skin irritant or sensitizer.
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
clove leaf. See clove oil
Categories: Plant Extracts, Irritants
Poor
clove oil. Potent skin irritant and inflammatory when used repeatedly (Sources: IFA—International... Read More
Categories: Plant Extracts, Irritants
Poor
clover blossom. Contains eugenol, which can be a skin sensitizer and cause photosensitivity.
Categories: Plant Extracts, Irritants
Poor
clover leaf oil. See clover blossom
Categories: Plant Extracts, Irritants
Poor
Coleus barbatus. Member of the mint family and also known as forskolin; can be a skin irritant. Not enough is... Read More
Categories: Plant Extracts, Irritants
Poor
comfrey extract. Several studies have shown that comfrey extract can have carcinogenic or toxic properties when... Read More
Categories: Anti-Irritants, Plant Extracts, Irritants
Poor
Copaifera officinalis. See balsam peru
Categories: Plant Extracts, Irritants
Poor
coriander. Herb and spice plant, the source of a fragrant component; it can be a potential skin irritant... Read More
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
cornmint. Also known as wild mint; it can be a skin irritant.
Categories: Plant Extracts, Irritants
Poor
cyclamen aldehyde. Synthetic fragrant component in products; it can be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Cymbopogon citrates. See lemongrass extract
Categories: Antibacterial/Anti-Acne, Plant Extracts, Irritants
Poor
daisy flower extract. There is no research showing this extract has any benefit for skin. Also known as tansy, it can... Read More
Categories: Irritants, Plant Extracts
Poor
dandelion extract. Can be a potent allergen (Source: Archives of Dermatology, January 1999, pages 67–70).
Categories: Plant Extracts, Irritants
Poor
Daucus carota. Also known as wild carrot. It can have antioxidant properties, but applied topically it can cause... Read More
Categories: Antioxidants, Irritants, Plant Extracts
Poor
denatured alcohol. See alcohol
Categories: Irritants
Poor
dimethyl ether. Colorless gas used as a propellant in aerosol products. It is toxic if inhaled and can be... Read More
Categories: Miscellaneous, Irritants
Poor
elecampane. Latin name Inula helenium; it is a plant that can be very irritating to the skin and can trigger... Read More
Categories: Irritants, Plant Extracts
Poor
English ivy extract. Can be a skin irritant due to its stimulant and astringent (skin-constricting) properties (Source:... Read More
Categories: Irritants, Plant Extracts
Poor
Equisetum arvense. See horsetail extract
Categories: Antioxidants, Irritants, Plant Extracts
Poor
esculin. Component of horse chestnut, it is considered a toxin and is not recommended for skin (Source:... Read More
Categories: Irritants
Poor
essential oil. See volatile oil
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
ethanol. See alcohol
Categories: Irritants
Poor
ethyl alcohol. See alcohol
Categories: Irritants
Poor
eucalyptus extract. Extract that may have antibacterial, antifungal, and antiviral properties on the skin (Source: Skin... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
eucalyptus oil. Fragrant plant oil whose active constituents are found in the leaves and the oil obtained from... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Eugenia aromatica. See clove oil
Categories: Irritants, Plant Extracts
Poor
Eugenia caryophyllus. See clove oil
Categories: Irritants, Plant Extracts
Poor
eugenol. See clove oil, methyleugenol
Categories: Irritants, Plant Extracts
Neutral
Euphrasia officinalis. See eyebright
Categories: Irritants, Plant Extracts
Neutral
eyebright. A plant; although the name sounds like it would be beneficial for the eye area, there are no... Read More
Categories: Irritants, Plant Extracts
Poor
fennel oil. Volatile, fragrant oil that can cause skin irritation and sensitivity.
Categories: Irritants, Plant Extracts
Poor
fennel seed extract. Can have antioxidant properties, but on skin it can be a skin irritant and photosensitizer (Source:... Read More
Categories: Antioxidants, Irritants, Plant Extracts
Poor
Ferula galbaniflua. See galbanum
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Great
feverfew extract. A plant that can be very irritating to the skin and can trigger allergic reactions. The irritation... Read More
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
Ficus carica fruit extract. See fig
Categories: Irritants, Plant Extracts
Poor
fig. Fruit that contains psoralens, which are compounds that may cause photodermatitis. Topical... Read More
Categories: Irritants, Plant Extracts
Poor
fir needle oil. Volatile, fragrant oil that can cause skin irritation and sensitivity.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Foeniculum vulgare extract. See fennel oil, fennel seed extract
Categories: Antioxidants, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
fragrance. One or a blend of volatile and/or fragrant plant oils (or synthetically derived oils) that impart... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
frankencense extract. Fragrant component used in skin-care products; it can be a skin irritant. There is no research... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
fumaric acid. Naturally occurring acid that has been proven effective for systemic and topical treatment of... Read More
Categories: Irritants
Poor
galbanum. Fragrant substance that, because of its resin and volatile oil content, can be extremely irritating... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Gardenia florida extract. Flower extract used in cosmetics to impart fragrance; also functions as an antioxidant (Source:... Read More
Categories: Antioxidants, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
geranium oil. Fragrant oil that can have antimicrobial properties but also can be a skin sensitizer or irritant... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Geranium pretense. Geranium plant.
Categories: Antioxidants, Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
ginger extract. Extract from a plant in the Zingiberacae family that has research showing it has... Read More
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
ginger oil. See ginger extract
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
gold. Relatively common allergen that can induce dermatitis about the face and eyelids (Source: Cutis,... Read More
Categories: Irritants
Poor
goldenseal. A plant that may have antibacterial or antiviral properties when taken orally. There is no evidence... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Neutral
Gossypium herbacuem seed oil. Also known as cotton seed oil, this non-fragrant plant oil that research has shown has anti-cancer... Read More
Categories: Irritants, Plant Extracts
Poor
grapefruit oil. Citrus oil whose volatile components (chiefly substances known as furocoumarins) are irritating to... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
guaiac wood. Used as a fragrant extract in cosmetics; it is a potent skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Guaiacum officinale. See guaiac wood
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
guarana. Herb that contains two and a half times more caffeine than coffee. It can have constricting... Read More
Categories: Irritants, Plant Extracts
Great
gums. Substances that have water-binding properties, but that are used primarily as thickening agents in... Read More
Categories: Film-Forming/Holding Agents, Irritants, Thickeners/Emulsifiers, Plant Extracts
Poor
Hamamelis virginiana. See witch hazel
Categories: Antioxidants, Irritants, Plant Extracts
Poor
hamamelitannin. Tannin that is found in witch hazel. It can be a skin irritant, but it also has potent antioxidant... Read More
Categories: Antioxidants, Irritants
Poor
hayflower extract. Plant extract that, due to its constricting effect on skin, can be an irritant. There is no... Read More
Categories: Irritants, Plant Extracts
Poor
Hedera helix. See English ivy extract
Categories: Irritants, Plant Extracts
Poor
hedione. Synthetic fragrant component in products, which also can be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
horse elder. See elecampane
Categories: Irritants, Plant Extracts
Poor
horseradish. Plant that can irritate skin and should never be applied to abraded skin.
Categories: Irritants, Plant Extracts
Poor
horsetail extract. Plant extract that has a high tannin, alkaloid, and nicotine content, which can have... Read More
Categories: Antioxidants, Irritants, Plant Extracts
Poor
Hydnocarpus anthelmintica. See chaulmoogra oil
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Hydrastis canadenis. See goldenseal
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
hydrogen peroxide. There is a great deal of current research showing that hydrogen peroxide is problematic as a... Read More
Categories: Antibacterial/Anti-Acne, Irritants
Poor
Hypericum extract. See St. John's wort
Categories: Antioxidants, Irritants, Plant Extracts
Neutral
hyssop. Fragrant plant extract that may have some antibacterial properties (Source: International Journal... Read More
Categories: Antibacterial/Anti-Acne, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Illicium vernum. See anise
Categories: Antibacterial/Anti-Acne, Antioxidants, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Inula helenium. See elecampane
Categories: Irritants, Plant Extracts
Poor
Iris florentina extract. See orris root
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
isopropyl alcohol. See alcohol
Categories: Irritants
Poor
ivy extract. See English ivy extract
Categories: Irritants, Plant Extracts
Poor
jasmine oil. Fragrant oil, often used as a source of perfume, that can be a skin irritant or sensitizer... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Jasminium grandiflorum. See jasmine oil
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
jonquil extract. Fragrant plant extract that poses a strong risk of skin irritation.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
juniper berry. Can have anti-inflammatory properties for skin (Source: Pharmacology and Toxicology, February 1998,... Read More
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
Juniperus communis. See juniper berry
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
Kathon CG. See methylchloroisothiazolinone, methylisothiazolinone
Categories: Irritants, Preservatives
Poor
kava-kava extract. Extract of the Piper methysticum plant that has analgesic (anti-inflammatory) properties, but... Read More
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
kawa extract. See kava-kava extract
Categories: Anti-Irritants, Irritants, Plant Extracts
Neutral
kiwi fruit extract. As a food, kiwi has significant antioxidant properties that may even be greater than those of... Read More
Categories: Antioxidants, Irritants, Plant Extracts
Great
kojic acid. By-product of the fermentation process of malting rice for use in the manufacture of sake, Japanese... Read More
Categories: Antioxidants, Irritants
Great
kojic dipalmitate. A mixture of kojic acid and palmitic acid. It functions as a skin-conditioning agent and can help... Read More
Categories: Antioxidants, Irritants
Neutral
kola nut. One of the major components of the kola nut is caffeine, which can be a skin irritant. However,... Read More
Categories: Irritants, Plant Extracts
Excellent
L-ascorbic acid. Form of vitamin C that is a potent antioxidant and anti-inflammatory agent (Sources:... Read More
Categories: Antioxidants, Anti-Irritants, Irritants
Poor
lavandin oil. Essential oil of the hybrid lavender plant Lavandula hybrida and used in cosmetics as a fragrance... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Lavandula angustifolia. See lavender extract and oil
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Lavandula officinalis. See lavender extract and oil
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
lavender extract and oil. Widely-used plant that's a member of the mint family. It is primarily a fragrance ingredient,... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
lemon. Potent skin sensitizer and irritant. Though it can have antibacterial properties, the irritation... Read More
Categories: Antibacterial/Anti-Acne, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
lemon balm. See balm mint extract
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
lemon oil. Can be a skin irritant, especially on abraded skin (Source: www.naturaldatabase.com).
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
lemongrass extract. Extract that can have antibacterial properties (Source: Journal of Applied Microbiology, 2000,... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
lemongrass oil. Also known as Oil of Verbena; can be effective as a mosquito repellent (Source: Phytomedicine,... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Neutral
Lentinus edodes extract. Extract from the shiitake mushroom that may have antimicrobial and antibacterial properties,... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Levisticum officinale root extract. See lovage root extract
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
lime (oil or extract). Citrus fruit whose volatile compounds are skin irritants and photosensitizing (Source:... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
limonene. Chemical constituent of many fragrant natural ingredients, notably citrus oils (d-limonene) and... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
linalool. Fragrant component of lavender and coriander that can be a potent skin irritant, allergen, or... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Litsea cubeba. See lemongrass oil
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Great
locust bean. See gums
Categories: Film-Forming/Holding Agents, Irritants, Thickeners/Emulsifiers, Plant Extracts
Poor
lovage root extract. Extract that is administered orally as a diuretic. In cosmetics, it is used as a fragrance.... Read More
Categories: Plant Extracts, Irritants
Great
lupine. Legume that is a source of isoflavones, a form of plant estrogen that has antioxidant properties... Read More
Categories: Antioxidants, Emollients, Irritants, Plant Extracts
Neutral
lupine oil. Extract of Lupinus albus, a legume; it has emollient and antioxidant properties, though it may also... Read More
Categories: Antioxidants, Emollients, Irritants, Plant Extracts
Great
Lupinus albus extract. Species of legume.
Categories: Antioxidants, Emollients, Irritants, Plant Extracts
Poor
lye. See potassium hydroxide, sodium hydroxide
Categories: Irritants, Surfactants/Detergent Cleansing Agents
Poor
mandarin orange oil or extract. Primarily used as a fragrance; it can be a skin irritant. There is no research showing it has any... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
marjoram. Herb with a fragrant component used in cosmetics; can be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Neutral
Melaleuca cajeputi oil. There is no research showing that this oil, which is derived from a plant in the same family as the... Read More
Categories: Irritants, Plant Extracts
Poor
Melia azadirachta. See neem extract or oil
Categories: Antibacterial/Anti-Acne, Irritants
Poor
Melissa officinalis. See balm mint extract, counter-irritant
Categories: Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
Mentha arvensis. See cornmint
Categories: Plant Extracts, Irritants
Poor
Mentha piperita. See counter-irritant, peppermint
Categories: Antibacterial/Anti-Acne, Plant Extracts, Irritants, Fragrance: Synthetic and Fragrant Plant Extracts
Poor
Mentha spicata. See counter-irritant, spearmint oil
Categories: Plant Extracts, Irritants, Fragrance: Synthetic and Fragrant Plant Extracts
Poor
Mentha viridis. See counter-irritant, spearmint oil
Categories: Plant Extracts, Irritants, Fragrance: Synthetic and Fragrant Plant Extracts
Poor
menthol. Derived from peppermint; menthol can have the same irritating effect as peppermint on skin (Source:... Read More
Categories: Antibacterial/Anti-Acne, Plant Extracts, Irritants, Fragrance: Synthetic and Fragrant Plant Extracts
Poor
menthone. Major constituent of peppermint.
Categories: Antibacterial/Anti-Acne, Plant Extracts, Irritants, Fragrance: Synthetic and Fragrant Plant Extracts
Poor
menthoxypropanediol. Synthetic derivative of menthol. It is known to produce effects that are twice as strong as... Read More
Categories: Irritants, Fragrance: Synthetic and Fragrant Plant Extracts
Poor
menthyl lactate. Used as a cooling agent and fragrance in cosmetics. It is a derivative of menthol and is supposed... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
methanol. See alcohol
Categories: Irritants
Poor
methylchloroisothiazolinone. In combination with methylisothiazolinone, it goes by the trade name Kathon CG (among others).... Read More
Categories: Irritants, Preservatives
Poor
methyleugenol. Natural constituent of plant oils such as those from rose, basil, blackberry, cinnamon, and anise.... Read More
Categories: Plant Extracts, Irritants
Poor
methylisothiazolinone. Preservative that is generally recommended only for use in rinse-off products such as cleansers or... Read More
Categories: Irritants, Preservatives
Poor
mint. Can be a skin irritant and cause contact dermatitis.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
myrrh. Fragrant gum resin that can be a skin irritant. There is little research showing it has any benefit... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
myrtle extract. Contains volatile oil and tannins, and can have fungicidal, disinfectant, and antibacterial... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Myrtus communis extract. See myrtle extract
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Narcissus poeticus wax. Fragrant flower extract that can cause irritation and dermatitis (Source: www.naturaldatabase.com)
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
neem extract or oil. Extract from leaves of the neem tree, it has potential toxic effects, although it also has been... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
neroli. See orange blossom
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
neroli oil. Fragrant plant oil that can be a skin irritant and sensitizer.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
oak root extract. Extract that may have antibacterial properties on skin, but that also can be a skin irritant.
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
olibanum extract. See frankencense extract
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
orange blossom. Fragrant extract that can also be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
orchid. Fragrant flower that can be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
oregano. Has potent antibacterial and antifungal properties, but can also be a skin irritant (Source:... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Origanum majorana. See marjoram
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Origanum vulgare flower extract. See oregano
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
orris root. Used primarily as a fragrant component due to its violet-like scent (Source:... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
PABA. See para-aminobenzoic acid (PABA)
Categories: Sunscreen Actives, Irritants
Poor
palmarosa oil. See geranium oil
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
papain. Enzyme extracted from papaya. Applied topically, papain can cause severe irritation, itching, and... Read More
Categories: Irritants, Leave-On Exfoliant, Plant Extracts
Neutral
papaya extract. Extract that is the source of papain, which theoretically can have exfoliating properties on skin,... Read More
Categories: Irritants, Leave-On Exfoliant, Plant Extracts
Poor
para-aminobenzoic acid (PABA). Sunscreen ingredient rarely used since the 1990s because of strong potential for allergic reactions.
Categories: Sunscreen Actives, Irritants
Poor
patchouli. Fragrant oil derived from mint. It contains eugenol and can be a skin sensitizer and irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Neutral
pawpaw extract. See papaya extract
Categories: Irritants, Leave-On Exfoliant, Plant Extracts
Poor
Pelargonium graveolens oil. See geranium oil
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
pellitory. Plant whose root extract can cause skin irritation; its safety is unknown.
Categories: Irritants, Plant Extracts
Poor
peppermint. Both the oil and the extract can have antimicrobial properties (Source: Journal of Agricultural and... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Neutral
Perilla ocymoides. Also known as beefsteak plant. Like many plants, the leaves contain flavones which help the plant... Read More
Categories: Anti-Irritants, Antioxidants, Irritants, Plant Extracts
Poor
petitgrain mandarin. See mandarin orange oil or extract
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
photosensitizer. Ingredient that can cause the skin to have an irritated or inflamed reaction when exposed to... Read More
Categories: Irritants
Poor
pine oil. Can have disinfectant properties (Source: Antimicrobial Agents and Chemotherapy, December 1997,... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Pinus lambertiana wood extract. Pine extract that may have skin-sensitizing properties (Source: Botanical Dermatology Database,... Read More
Categories: Irritants, Plant Extracts
Poor
Piper nigrum. See black pepper extract and oil
Categories: Irritants, Plant Extracts
Poor
Pogostemon cablin. See patchouli
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
polyvinyl alcohol. An irritating form of alcohol that often serves as the main ingredient in peel-off facial masks.
Categories: Film-Forming/Holding Agents, Irritants
Great
potassium. Important element in diet that is present in such fruits as bananas and citrus. It is also an earth... Read More
Categories: Absorbent, Irritants, Plant Extracts
Neutral
potassium hydroxide. Also known as lye, a highly alkaline ingredient used in small amounts in cosmetics to modulate the... Read More
Categories: Irritants, Surfactants/Detergent Cleansing Agents
Neutral
potassium myristate. Detergent cleansing agent that is a constituent of soap; it can be drying and sensitizing for some... Read More
Categories: Irritants, Surfactants/Detergent Cleansing Agents
Poor
Pyrus cydonia. See quince seed
Categories: Irritants, Plant Extracts, Thickeners/Emulsifiers
Neutral
quaternium-15. Formaldehyde-releasing preservative used in cosmetics. It can be a skin sensitizer, as can all... Read More
Categories: Irritants, Preservatives
Poor
quercus. See oak root extract
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
Quercus infectoria extract. See oak root extract
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
quince seed. Used as a thickening agent in cosmetics, but also has skin-constricting properties (Source:... Read More
Categories: Irritants, Plant Extracts, Thickeners/Emulsifiers
Poor
Ranunculus ficaria extract. Extract that may have antibacterial and antifungal properties and that is used in the treatment of... Read More
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Great
raspberry seed extract. See red raspberry extract
Categories: Antioxidants, Antibacterial/Anti-Acne, Irritants, Plant Extracts
Great
raspberry seed oil. See red raspberry extract
Categories: Antioxidants, Antibacterial/Anti-Acne, Irritants, Plant Extracts
Great
red raspberry extract. Fruit extract that has potent antioxidant properties (Source: Journal of Agricultural Food... Read More
Categories: Antioxidants, Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
red sandalwood. Has a phytoestrogen component (Source: Phytochemistry, March 2000, pages 605–606), but can... Read More
Categories: Irritants, Plant Extracts
Excellent
Renova. See Retin-A, tretinoin
Categories: Cell-Communicating Ingredients, Prescription Drugs, Irritants, Vitamins
Poor
resorcinol. Considered an effective topical disinfectant in concentrations of 1% to 3% (Source: www.fda.gov).... Read More
Categories: Antibacterial/Anti-Acne, Irritants
Excellent
Retin-A. One of several prescription-only drugs (others include Renova, Retin-A Micro, and Avita) that... Read More
Categories: Cell-Communicating Ingredients, Prescription Drugs, Irritants, Vitamins
Neutral
riboflavin
Categories: Irritants, Vitamins
Great
rice starch. Absorbent substance sometimes included in products rather than talc. It can cause allergic... Read More
Categories: Absorbent, Irritants, Plant Extracts
Poor
rose flower. Highly fragrant substance that can be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
rose flower oil. Fragrant, volatile oil that can be a skin irritant and sensitizer. There is no research showing... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
rose oil. Fragrant, volatile oil that can be a skin irritant and sensitizer.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
rosemary extract. Extract that can have antioxidant benefit for skin (Source: Journal of Agricultural Food Chemistry,... Read More
Categories: Antioxidants, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
rosemary oil. See rosemary extract
Categories: Antioxidants, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
rosewood oil. Fragrant plant oil with a spicy-sweet scent, also known as bois de rose. It is extracted from wood... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Rosmarinus officinalis extract. See rosemary extract
Categories: Antioxidants, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Great
Rubus idaeus. See red raspberry extract
Categories: Antioxidants, Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
sage extract. Aromatic plant used most often to enhance the flavor of foods. Like all plant extracts, sage... Read More
Categories: Plant Extracts, Irritants
Poor
sandalwood oil. Fragrant oil that can cause skin irritation or allergic reactions (Source: American Journal of... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Neutral
Santalum album seed extract. Latin name for sandalwood extract, which is used in cosmetics as a fragrance. It can have... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
sausurrea oil. Also called costus oil. Volatile oil and fragrant component used in cosmetics; it can be a skin... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
SD alcohol. See alcohol
Categories: Irritants
Poor
SD alcohol 40-2. Denatured alcohol used as a solvent. It can be drying and irritating to skin when one of the main... Read More
Categories: Irritants
Neutral
sea salt. Can be effective as a topical scrub, but if left on skin it can increase skin sensitivity to UVB... Read More
Categories: Scrub Agents, Irritants
Poor
silver. Metallic element that in cosmetics can have disinfecting properties; however, prolonged contact can... Read More
Categories: Antibacterial/Anti-Acne, Irritants
Neutral
silver chloride. See silver sulfadiazine
Categories: Irritants
Neutral
silver sulfadiazine. Can be effective for wound healing (Source: Journal of Vascular Surgery, August 1992, pages... Read More
Categories: Irritants
Neutral
Silybum marianum extract. See lady's thistle extract
Categories: Irritants, Plant Extracts
Poor
soap. True “soaps” are regulated by the Consumer Product Safety Commission and are not... Read More
Categories: Irritants, Surfactants/Detergent Cleansing Agents
Neutral
sodium bisulfite. Used in acid-type permanent waves to alter the shape of hair. It is less damaging than alkaline... Read More
Categories: Irritants
Poor
sodium borate. See borate
Categories: Irritants
Poor
sodium C14-16 olefin sulfate. Can be derived from coconut. Used primarily as a detergent cleansing agent, but is potentially... Read More
Categories: Irritants, Surfactants/Detergent Cleansing Agents
Poor
sodium carbonate. Absorbent salt used in cosmetics; it can also be a skin irritant.
Categories: Absorbent, Irritants
Poor
sodium cocoate. Used as a cleansing agent primarily in soaps. It can be drying and irritating for skin.
Categories: Irritants, Surfactants/Detergent Cleansing Agents
Neutral
sodium hydroxide. Also known as lye, it is a highly alkaline ingredient used in small amounts in cosmetics to... Read More
Categories: Irritants, Surfactants/Detergent Cleansing Agents
Poor
sodium lauryl sulfate. Versatile ingredient composed of several non-volatile alcohols. Functions primarily as... Read More
Categories: Irritants, Surfactants/Detergent Cleansing Agents, Thickeners/Emulsifiers
Neutral
sodium metabisulfite. Reducing agent that alters the structure of hair. It can also be used as a preservative in... Read More
Categories: Antioxidants, Irritants, Preservatives
Poor
sodium silicate. Highly alkaline and potentially irritating antiseptic and mineral used in cosmetics (Source:... Read More
Categories: Antibacterial/Anti-Acne, Irritants
Neutral
sodium sulfite. Reducing agent that alters the structure of hair. It can also be used as a preservative in cosmetic... Read More
Categories: Irritants, Preservatives
Poor
sodium thioglycolate. See thioglycolate
Categories: Irritants
Neutral
Solanum lycopersicum extract. See tomato extract
Categories: Antioxidants, Irritants, Plant Extracts
Great
sorbic acid. Preservative derived from mountain ash berries or manufactured synthetically. Sorbic acid is used... Read More
Categories: Irritants, Preservatives
Poor
spearmint oil. Fragrant, volatile oil that can cause skin irritation and allergic reactions.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
star anise. See anise
Categories: Antibacterial/Anti-Acne, Antioxidants, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Poor
sulfur. Antibacterial agent (Source: Applied Microbiology and Biotechnology, October 2001, pages... Read More
Categories: Antibacterial/Anti-Acne, Irritants
Great
surfactant. Shortened term for surface active agent. Surfactants degrease and emulsify oils and fats and... Read More
Categories: Surfactants/Detergent Cleansing Agents, Irritants
Poor
Symphytum officinale extract. See comfrey extract
Categories: Anti-Irritants, Plant Extracts, Irritants
Poor
Szechuan peppercorn. From a plant native to Szechuan Province in China. It grows on trees, and so differs from black... Read More
Categories: Irritants, Plant Extracts
Great
Tanacetum parthenium. See feverfew extract
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
tangerine oil. Fragrant, volatile citrus oil that can be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Neutral
tannin. Component of many plants. It can have an anti-tumor benefit when consumed in tea or foods (Source:... Read More
Categories: Irritants, Plant Extracts
Poor
Taraxacum officinale. See dandelion extract
Categories: Plant Extracts, Irritants
Poor
TEA-lauryl sulfate. While there is abundant research showing sodium lauryl sulfate is a sensitizing cleansing agent,... Read More
Categories: Irritants, Surfactants/Detergent Cleansing Agents, Thickeners/Emulsifiers
Excellent
tetrahydrodemethoxycurcumin. See curcumin, turmeric
Categories: Antioxidants, Anti-Irritants, Plant Extracts, Irritants
Poor
thioglycolate. Compound used in permanent waves and depilatories either to alter the structure of hair or to... Read More
Categories: Irritants
Neutral
thyme extract. Extract derived from the leaf or flower of the thyme plant. It can have potent antioxidant... Read More
Categories: Antioxidants, Irritants, Plant Extracts
Poor
thyme oil. The most concentrated part of the thyme plant, and a potent source of antioxidants, some of which... Read More
Categories: Antioxidants, Irritants, Plant Extracts
Poor
Thymus serpillum extract. Extract of wild thyme.
Categories: Antioxidants, Irritants, Plant Extracts
Neutral
Thymus vulgaris. See thyme extract
Categories: Antioxidants, Irritants, Plant Extracts
Neutral
tomato extract. Extract that has weak antioxidant properties (Source: Free Radical Research, February 2002, pages... Read More
Categories: Antioxidants, Irritants, Plant Extracts
Poor
tormentil extract. Plant that can be irritating due to its tannin content, which causes skin constriction.
Categories: Irritants, Plant Extracts
Neutral
trigonella foenum-graecum seed extract. Latin name for the fenugreek plant. The seeds are used most often, and their fiber content helps... Read More
Categories: Irritants, Plant Extracts, Thickeners/Emulsifiers
Great
turmeric. Spice made from the dried, ground root of a plant; its extract is called curcumin. A natural yellow... Read More
Categories: Antioxidants, Irritants, Plant Extracts
Great
urea. Component of human and animal urine that’s also found in the blood and other tissues,... Read More
Categories: Irritants
Poor
verbena extract. Fragrant extract that can be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
vetiver oil or extract. Fragrant component in skin-care products that also has some antibacterial properties (Source:... Read More
Categories: Antibacterial/Anti-Acne, Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Neutral
vitamin B2. There is no research showing this has any benefit when applied topically to skin. However, there is... Read More
Categories: Irritants, Vitamins
Poor
volatile oil. Group of volatile fluids derived primarily from plants and used in cosmetics primarily as fragrant... Read More
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants
Neutral
white nettle. Contains components that can have both anti-irritant as well as inflammatory properties (Source:... Read More
Categories: Anti-Irritants, Plant Extracts, Irritants
Poor
white oak bark extract. See oak root extract
Categories: Antibacterial/Anti-Acne, Irritants, Plant Extracts
Poor
wild ginger. See ginger extract
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
wintergreen oil. Can be very irritating and sensitizing (Source: www.naturaldatabase.com).
Categories: Irritants, Plant Extracts
Poor
witch hazel. Commonly used plant extract that can have potent antioxidant properties (Sources: Phytotherapy... Read More
Categories: Antioxidants, Anti-Irritants, Irritants, Plant Extracts
Poor
Xi xin. See ginger extract
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
yarrow extract. Extract for which there is little research showing it to have any benefit for skin. What studies do... Read More
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
ylang ylang. Fragrant, volatile oil that can also be a skin irritant.
Categories: Fragrance: Synthetic and Fragrant Plant Extracts, Irritants, Plant Extracts
Poor
Zanthoxylum piperitum. See Szechuan peppercorn
Categories: Irritants, Plant Extracts
Poor
zinc carbonate. See calamine
Categories: Miscellaneous, Irritants
Poor
zinc phenolsulfonate. Antimicrobial agent that can also be a skin irritant.
Categories: Antibacterial/Anti-Acne, Irritants
Poor
zinc sulfate. Chemical compound resulting from the interaction of zinc with sulfuric acid. There is little... Read More
Categories: Irritants
Poor
Zingiber officinale roscoe. See ginger extract
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
Zingiber zerumbet. See ginger extract
Categories: Anti-Irritants, Irritants, Plant Extracts
Poor
Zingiberaceae. See ginger extract
Categories: Anti-Irritants, Irritants, Plant Extracts