Potassium Lactate is the potassium salt of lactic acid, a clear, water-soluble humectant and buffering agent. It's included in lotions, gels, and hair products to attract moisture, improve glide, and support formula pH without a heavy feel.
A humectant that helps skin hold moisture for a smoother, bouncier look.
Category
Hydration, Skin Conditioning
Type
Humectant
Ratings
Overall Rating
Great
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Potassium Lactate a Good Ingredient?
It's a well-established humectant related to skin's natural moisturizing factors, with good stability and low irritation at typical use, strong enough across the board to earn a Great rating. It also buffers pH without adding weight.
What it does
Skin Benefits
Helps skin retain water for a smoother, bouncier appearance and reduces the sensation of dryness. Also supports comfortable skin feel without heaviness.
Where you'll find it
Uses in Skincare & Cosmetics
Used in moisturizers, face serums, and hair conditioners to increase hydration levels and improve spreadability on skin or hair.
Before you use it
Safety
Usually well tolerated; mild stinging can occur on compromised or very sensitive skin or at higher concentrations. Not known to be photosensitizing or comedogenic at typical levels.