Lactic acid is an alpha hydroxy acid used in over-the-counter skin care products and professional treatments. It’s naturally found in milk, though the lactic acid in today’s skin care products is synthetically produced. Lactic acid is used to exfoliate the skin, lighten dark spots, and improve the look of fine lines and wrinkles.
- usage Level 10% or less
- pH of 3.5 or higher
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