Lactic acid is an alpha hydroxy acid that has many uses in the skin care industry. As you may have guessed by the name, lactic acid is derived from milk. It has been used for centuries for improving the condition of the skin. Cleopatra was even documented as having taken milk baths for softer smoother skin! Lactic acid is still used in many skin care products today.
Alpha hydroxy acids are used to break down the bond that holds the dead skin on your face. This leaves the skin exfoliated and feeling smooth.
When used as a chemical peel it is best suited for dry, sensitive skin. Lactic acid has a larger molecule so it doesn't penetrate the skin as rapidly as say glycolic acid so it causes less irritation. There are many different strengths available so make sure your esthetician knows what strength is best for you skin.
It is also used in home care products. It can be used as a gentle exfoliante and it will add extra hydration at lower levels. It is also used as a pigment lightener. It is a very versatile product and one of my favorite treatments to use in the facial room.
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