AHA Acids (Alpha Hydroxy Acids) Alpha Hydroxy Acids (AHA)
AHA acids (alpha hydroxy acids) are a group of natural fruit-derived acids — glycolic, lactic, malic, citric and mandelic — found in sugar cane, milk, apples, citrus fruits and bitter almonds. Because they are water-soluble, they act on the surface of the epidermis, where they loosen the bonds between dead corneocytes and initiate the process of chemical exfoliation. They stimulate collagen synthesis, accelerate cell renewal and improve the penetration of other active ingredients. They effectively smooth wrinkles, reduce discolouration, even out skin tone and give the skin a fresh, youthful look. Ideal for caring for dull, mature and photoaged skin — they absolutely require an SPF cream in the morning.
EXFOLIATIONGlycolic 8% for 22 weeks: 37% reduction in fine lines and texture refinement (Stiller et al., 1996, n=74).
Hydrolysis of the desmosomal bonds between corneocytes by lowering pH. They activate fibroblasts to synthesise new collagen and GAGs (hyaluronic acid). They require SPF in the morning.
