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Rating Ingredient
Best

ubiquinone

it is a vitamin-like, fat-soluble substance.

Good

Ulmus fulva bark extract

Good

ultramarines

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

Good

Ulva lactuca extract

Extract from the plant known as sea lettuce, it has some soothing and antioxidant...

Average

Uncaria tomentosa extract

Also known as cat’s claw, there is some research showing it to be an effective soothing...

Good

Undaria pinnatifida

Form of brown algae.

Good

urea

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

Average

Urtica dioica

Poor

UVA

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

Categories: Miscellaneous
Best

Uva ursi extract

Poor

UVB

Ultra-violet B radiation.

Categories: Miscellaneous

About the Experts

Paula Begoun is the best-selling author of 20 books about skincare and makeup. She is known worldwide as The Cosmetics Cop and creator of Paula’s Choice Skincare. Paula’s expertise has led to hundreds of appearances on national and international radio, print, and television including:

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The Paula's Choice Research Team is dedicated to busting beauty myths and providing expert advice that solves your skincare frustrations so you can have the best skin of your life!