Ingredient Dictionary

Best

ubiquinone

See coenzyme Q10

Categories: Anti-Irritants, Antioxidants

Good

Ulmus fulva bark extract

See slippery elm bark

Categories: Plant Extracts, Anti-Irritants

Good

ultramarines

Inorganic pigments (of various colors) permanently listed by the FDA for external use only,... Read More »

Categories: Coloring Agents/Pigments

Good

Ulva lactuca extract

Extract from the plant known as sea lettuce, it has some anti-inflammatory and antioxidant... Read More »

Categories: Anti-Irritants, Plant Extracts, Antioxidants

Average

Uncaria tomentosa extract

Also known as Cat’s Claw, there is some research showing it to be an effective anti-inflammatory... Read More »

Categories: Plant Extracts

Good

Undaria pinnatifida

Form of brown algae. Read More »

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

Good

undecylenoyl phenylalanine

A white powder composed of amino acids and fatty acids. It appears to have a positive impact on... Read More »

Categories: Miscellaneous

Good

urea

Component of urine, although synthetic versions are used in cosmetics. In small amounts urea has... Read More »

Categories: Leave-On Exfoliant, Skin-Identical/Repairing Ingredients

Average

Urtica dioica

See nettle extract

Categories: Anti-Irritants, Plant Extracts

Poor

UVA

Ultraviolet A radiation. The sun produces a range of ultraviolet (UV) radiation, of which UVA and... Read More »

Categories: Miscellaneous

Best

Uva ursi extract

See bearberry extract , arbutin

Categories: Plant Extracts, Antibacterial/Anti-Acne

Poor

UVB

Ultra-violet B radiation. Read More »

Categories: Miscellaneous

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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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