The Ordinary Lactic Acid 10% + Hyaluronic Acid

Lactic Acid 10% + HA is an alpha hydroxy acid solution that provides effective, targeted exfoliation at the skin's surface. It is powered by pure Tasmanian pepperberry extract, which has been shown to reduce the sensitivity that can result from acid use. This water-based serum is ideal for dry skin types. The pH of this formula is approximately 3.8. Lactic acid has a pKa of 3.8, and pKa is the most important aspect to consider in formulating with acids. pKa refers to the acid's availability. When pKa is close to the pH level, there is an ideal balance between salt and acidity, maximizing the acid's effectiveness and minimizing sensitivity.