Lactic Acid
Helps attract water.
In the Exfoliating acids group
What it is
An acid found naturally in sour milk and other fermented foods, usually made by fermenting sugars. It is one of the alpha hydroxy acids.
Adjusts the product's pH and helps the skin hold on to water.
What it does in a formula
Helps attract waterOfficial EU function: Humectant
Balances the pHOfficial EU function: Buffering
Keeps skin in good conditionOfficial EU function: Skin conditioning
Why some people watch for it
Exfoliating acids
Some people limit exfoliating acids because they can make skin more sensitive, including to the sun, or because they already use one and do not want to layer more.