Ingredient Dictionary

Good

talc

Naturally occurring silicate mineral (any group of substances containing negative ions composed of... Read More »

Categories: Miscellaneous

Poor

tallow

Substance extracted from the fatty deposits of animals, especially from suet (the fat of cattle and... Read More »

Categories: Miscellaneous

Good

tamanu oil

From a tree native to Polynesia. It is reputed to have wondrous wound-healing properties, as well... Read More »

Categories: Plant Extracts, Anti-Irritants

Best

Tamarindus indica seed extract

More commonly known as tamarind, the seed extract is used more often for care of the eye itself rather than for skin care. Read More »

Categories: Antioxidants, Cell-Communicating Ingredients

Average

Tanacetum parthenium

See feverfew extract

Categories: Plant Extracts, Irritants, Anti-Irritants

Poor

tangerine oil

Fragrant, volatile citrus oil that can be a skin irritant. Read More »

Categories: Irritants, Plant Extracts, Fragrance: Synthetic and Fragrant Plant Extracts

Best

tannic acid

Potent antioxidant; it may have some anticarcinogenic properties (Sources: Bioorganic & Medicinal... Read More »

Categories: Antioxidants

Average

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

Taraktogenos kurzii

See chaulmoogra oil

Categories: Antibacterial/Anti-Acne, Plant Extracts

Poor

Taraxacum officinale

See dandelion extract

Categories: Plant Extracts, Irritants

Good

tartaric acid

See AHA

Categories: Leave-On Exfoliant

Best

Tazorac

Chemically known as tazarotene, it is a synthetically derived retinoid with properties similar to... Read More »

Categories: Anti-Irritants, Prescription Drugs

Good

TEA

See triethanolamine

Categories: Miscellaneous

Good

tea tree oil

Also known as melaleuca, from the name of its plant source, Melaleuca alternifolia. It can have... Read More »

Categories: Plant Extracts, Antibacterial/Anti-Acne

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

Average

teprenone

Teprenone is the brand name for a drug known as geranylgeranylacetone, which is used to treat... Read More »

Categories: Miscellaneous

Best

terephthalylidine dicamphor sulfonic acid

See Mexoryl SX

Categories: Sunscreen Actives

Best

Terminalia catappa

Can be a potent antioxidant (Source: Anticancer Research, January-February 2001, pages 237–243). Read More »

Categories: Antioxidants, Plant Extracts

Best

Terminalia sericea

Herb that is effective against some forms of gram-positive and gram-negative bacteria when used in... Read More »

Categories: Plant Extracts, Anti-Irritants

Good

Terminalia sericea extract

Extract that has anti-inflammatory and antibacterial properties, but there is no research showing... Read More »

Categories: Anti-Irritants, Plant Extracts, Antibacterial/Anti-Acne

Good

tetradibutyl pentaerithrityl hydroxyhydrocinnamate

See antioxidant

Categories: Antioxidants

Best

tetrahexyldecyl ascorbate

Stable form of vitamin C that is considered an analogue of L-ascorbic acid. Unlike pure vitamin C... Read More »

Categories: Vitamins, Antioxidants

Best

tetrahydrobisdemethoxycurcumin

Antioxidant and anti-inflammatory plant extract. Read More »

Categories: Plant Extracts, Anti-Irritants, Antioxidants

Best

tetrahydrobisdemethoxydiferuloylmethane

A synthetic antioxidant derived from Curcumin. Read More »

Categories: Antioxidants

Best

tetrahydrodemethoxycurcumin

See turmeric , curcumin

Categories: Anti-Irritants, Plant Extracts, Antioxidants

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About the Experts

Paula Begoun is the best-selling author of 20 books on skin care and makeup. She is known worldwide as the Cosmetics Cop and creator of Paula's Choice. Paula's expertise has led to hundreds of appearances on national and international television including:

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The Paula's Choice Research Team is dedicated to helping you find the absolute best products for your skin, using research-based criteria to review beauty products from an honest, balanced perspective. Each member of the team was personally trained by Paula herself.

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