Kaolin is a naturally occurring white clay that is gentler and less absorbent than bentonite clay, making it a popular choice for masks aimed at normal to combination skin rather than very oily skin alone.
Like other cosmetic clays, it works largely through mechanical absorption, drawing oil and debris out of pores as the mask dries, and a scientific review of clays used in cosmetics found supportive evidence for kaolin's gentle cleansing and mild exfoliating properties.
Because it is milder than bentonite, kaolin is less likely to leave skin feeling overly tight or dry, which has made it a common choice in sensitive skin formulas as well as color cosmetics like mineral makeup.
Kaolin Clay References
The Scenario of Clays and Clay Minerals Use in Cosmetics/Dermocosmetics, Cosmetics, 2024
Clay Therapy in Wound Care: A Scientific Review of Bentonite and Kaolinite Clays and Their Antimicrobial Potentials, Journal of Integrative Dermatology, 2025
Our team reviews ingredient research and uses up-to-date evidence to rate ingredients based on the categories below.
Best
Ingredients with the most rigorous and convincing evidence. These are the standouts backed by consistent findings across independent, peer reviewed clinical research.. When we call an ingredient Best, it has earned that distinction through genuine, reproducible proof that it improves skin.
Good
Reliable, well tolerated ingredients that do their job without complaint. They may not carry the headline benefits of a Best rated active, but they hydrate, stabilize a formula, or support the ingredients around them in ways that make a real difference in how a product performs and feels.
Average
Ingredients that are perfectly safe and serve a clear function, typically as an emollient, thickener, or filler, but do not offer any meaningful skin benefit beyond that basic job. Not a red flag, just not a reason to choose one product over another.
Bad/Worst
Ingredients with documented potential to irritate skin, disrupt the barrier, or trigger sensitization in some users, often synthetic fragrance, drying forms of alcohol, or certain essential oils. Not automatically a dealbreaker for every skin type, but worth knowing about before you commit to a product.
