True
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Ingredient Dictionary

Poor

yarrow extract

Extract for which there is little research showing it to have any benefit for skin. What studies do... Read More »

Categories: Plant Extracts, Skin Soothing, Sensitizing

Good

yeast

Group of fungi that ferment sugars. Yeast is a source of beta-glucan, which is a good antioxidant.... Read More »

Categories: Antioxidants

Good

yeast extract

See yeast

Categories: Antioxidants

Good

yellow 5

See FD&C colors

Categories: Coloring Agents/Pigments

Good

yellow 6 lake

See FD&C colors

Categories: Coloring Agents/Pigments

Best

yerba mate extract

Used for the preparation of the most popular tea-like beverage in South America. It has... Read More »

Categories: Skin Soothing, Plant Extracts, Antioxidants

Poor

ylang ylang

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

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

Average

yogurt

There is no research showing that yogurt is effective when applied topically on skin. Yogurt... Read More »

Categories: Miscellaneous

Average

yucca extract

Plant extract that can have soothing benefits. Read More »

Categories: Skin Soothing, Plant Extracts, Antioxidants

Average

Yucca schidigera

See yucca extract

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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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