Refining · the active
Glycolic Acid
5%
The smallest alpha-hydroxy acid, so it penetrates fastest to loosen dead surface cells and reveal brighter skin. In controlled use glycolic acid increased type-I collagen and hyaluronic-acid content of human skin; at 5% the resurfacing is gentle and cumulative, made for daily rhythm.
Bernstein 2001 · Dermatol Surg









