Glycolic Acid Glycolic Acid (AHA)
Glycolic acid is the smallest and most active of the AHA (alpha-hydroxy acids) group — thanks to its low molecular weight, it penetrates deep into the layers of the epidermis. Derived from sugar cane, it works by loosening the bonds between dead corneocytes, initiating the process of chemical exfoliation. It stimulates the synthesis of new collagen and accelerates cell renewal, thereby smoothing wrinkles, reducing hyperpigmentation, and improving skin texture. It effectively unclogs pores, reducing imperfections and blackheads, which is why it works well in the care of oily, problematic skin and skin with signs of photoaging. It requires the use of an SPF cream — it increases the skin's sensitivity to UV radiation.
Exfoliation10% glycolic acid over 12 weeks: a 30% reduction in wrinkles and a 27% increase in epidermal thickness (Bernstein et al., 2001).
Hydrolysis of desmosomal bonds between corneocytes by lowering pH. Stimulation of collagen synthesis through fibroblast activation.
