True
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b6eb977c-b2b7-49a8-a301-0e1f1b273f91

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 skin-restoring properties, as well… Read More »

Categories: Plant Extracts, Skin-Soothing, Hydration

Average

Tanacetum parthenium

See feverfew extract

Categories: Plant Extracts, Sensitizing, Skin-Soothing

Poor

tangerine oil

Fragrant, volatile citrus oil that can be a skin sensitizer… Read More »

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

Best

tannic acid

Polyphenol that's considered a very good antioxidant… Read More »

Categories: Antioxidants

Good

tartaric acid

See AHA

Categories: Exfoliant

Good

TEA

See triethanolamine

Categories: Miscellaneous

Good

tea tree oil

Also known as melaleuca, from the name of its native Australian plant source, Melaleuca alternifolia. Read More »

Categories: Plant Extracts

Poor

TEA-lauryl sulfate

While there is abundant research showing sodium lauryl sulfate is a sensitizing cleansing agent,... Read More »

Categories: Sensitizing, Cleansing Agents, Thickeners/Emulsifiers

Best

terephthalylidene dicamphor sulfonic acid

See ecamsule

Categories: Sunscreen Actives

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 skin-soothing plant extract. Read More »

Categories: Plant Extracts, Skin-Soothing, Antioxidants

Best

tetrahydrobisdemethoxydiferuloylmethane

A synthetic antioxidant derived from curcumin. Read More »

Categories: Antioxidants

Best

tetrahydrodemethoxycurcumin

See turmeric , curcumin

Categories: Skin-Soothing, Plant Extracts, Antioxidants

Best

tetrahydrodemethoxydiferuloylmethane

A synthetic antioxidant that provides the effects of the antioxidant curcumin but... Read More »

Categories: Antioxidants, Skin-Soothing

Best

tetrahydrodiferuloylmethane

Antioxidant and skin-soothing plant extract. Read More »

Categories: Skin-Soothing, Antioxidants

Best

tetrahydromethoxycurcumin

Antioxidant and skin-soothing plant extract. Read More »

Categories: Skin-Soothing, Antioxidants

Good

tetrahydroxypropyl ethylenediamine

See chelating agent

Categories: Miscellaneous

Good

tetrasodium EDTA

Chelating agent used to prevent minerals present in formulations from bonding to other ingredients. Read More »

Categories: Miscellaneous

Good

tetrasodium etidronate

Used as a chelating agent in cosmetics to prevent varying mineral components from binding together... Read More »

Categories: Miscellaneous

Best

Theobroma cacao seed butter

See cocoa butter

Categories: Emollients, Plant Extracts

Good

thiamine HCL

Vitamin B1. There is no research showing this to be effective when applied topically on skin. Read More »

Categories: Vitamins

Good

thickening agent

Substances that can have a soft to hard waxlike texture or a creamy, emollient feel, and that can... Read More »

Categories: Thickeners/Emulsifiers

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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 busting beauty myths and helping you solve your skincare frustrations with research-supported expert advice—so you'll have the facts you need to take the best possible care of your skin.

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