What is it?
Lactic acid is an alpha hydroxy acid (AHA) that is widely used in skincare for its exfoliating and hydrating properties. It is a key ingredient in many skincare formulations designed to benefit skin texture, tone, and overall appearance. Lactic acid works by gently exfoliating the surface of the skin, promoting cell turnover, and revealing fresher, brighter skin underneath.
Where does it come from?
Lactic acid is naturally found in sour milk products such as yogurt and buttermilk, as well as in fermented vegetables like sauerkraut and kimchi. It is produced through the fermentation of lactose (milk sugar) by lactic acid bacterium.