Pyruvic acid is a small, naturally occurring alpha keto acid, a close chemical cousin of the alpha hydroxy acids like glycolic acid. Because it is such a small molecule, it penetrates skin quickly and works as both an exfoliant and a mild stimulator of new collagen production.
Clinical studies using higher strength pyruvic acid peels, performed in a medical setting, have measured genuine improvements in fine lines, acne scarring, and photoaging after a series of treatments.
A randomized trial comparing pyruvic acid peels to azelaic acid peels for adult acne found both to be effective, with pyruvic acid also showing a notable oil reducing effect. Because of its strength, pyruvic acid is more often used in professional peels than in everyday leave on products.
Pyruvic Acid References
Clinical and Instrumental Evaluation of Skin Improvement after Treatment with a New 50% Pyruvic Acid Peel, Dermatologic Surgery, 2006
A Comparison of the Effectiveness of Azelaic and Pyruvic Acid Peels in the Treatment of Female Adult Acne: A Randomized Controlled Trial, Scientific Reports, 2020
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.
