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Ingredient Dictionary

Good

kaolin

Naturally occurring clay mineral (silicate of aluminum) that is used in cosmetics for its absorbent... Read More »

Categories: Absorbent

Poor

Kathon CG

See methylisothiazolinone , methylchloroisothiazolinone

Categories: Sensitizing, Preservatives

Poor

kava-kava extract

Extract of the Piper methysticum plant that has soothing properties, but can... Read More »

Categories: Plant Extracts, Sensitizing, Skin Soothing

Poor

kawa extract

See kava-kava extract

Categories: Skin Soothing, Plant Extracts, Sensitizing

Good

kelp extract

See algae

Categories: Antioxidants, Thickeners/Emulsifiers, Emollients, Plant Extracts

Average

Kigelia africana extract

Extract of African plant commonly known as the sausage tree. The African lore about this extract is... Read More »

Categories: Plant Extracts, Skin Soothing, Antioxidants

Average

kiwi fruit extract

As a food, kiwi has significant antioxidant properties that may even be greater than those of... Read More »

Categories: Sensitizing, Antioxidants, Plant Extracts

Good

kojic acid

By-product of the fermentation process of malting rice for use in the manufacture of sake, Japanese... Read More »

Categories: Antioxidants

Good

kojic dipalmitate

A mixture of kojic acid and palmitic acid. It functions as a skin-conditioning agent and antioxidant... Read More »

Categories: Antioxidants

Average

kola nut

One of the major components of the kola nut is caffeine, which in high amounts can be a skin sensitizer... Read More »

Categories: Plant Extracts, Sensitizing

Best

kudzu root

Source of isoflavone, genistein, and daidzein, all plant estrogens.. Read More »

Categories: Antioxidants, Plant Extracts

Best

kukui nut oil

Non-volatile oil from a plant native to Hawaii; it has emollient properties for skin (Source:... Read More »

Categories: Plant Extracts, Emollients

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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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