
SKINCARE INGREDIENTS
Refine your skincare knowledge with our skincare ingredient glossary.
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What ingredients are needed in skincare?
Efficacious ingredients play a crucial role in skincare products to deliver targeted benefits to the skin. With so many skincare ingredients at your disposal, we suggest starting by identifying your unique skin concerns to find out which is right for you.
For hydration, you’ll want to seek out moisture-locking ingredients like hyaluronic acid, glycerin, and squalane. If you have dullness or hyperpigmentation concerns, antioxidants like vitamin C and niacinamide can work to unify and brighten skin tone. Meanwhile, ingredients like retinol and salicylic acid are key fixtures in blemish-prone and anti-ageing skincare routines.
Discover Effective Skincare Ingredients by Kiehl’s
Blending apothecary roots with skin science, discover Kiehl’s most effective skincare ingredients.

VITAMIN-C

RETINOL

SQUALANE

SALICYLIC ACID
Explore articles by ingredient
Study up on skincare ingredients with Kiehl’s curated ingredient guides.
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Find the right skincare ingredients for your skin concerns.





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