The Ordinary Lactic Acid 10% + HA 2% is a surface peel formulation of high strength lactic acid.

Lactic acid is an alpha-hydroxy acid that exfoliates the skin. This 10% formulation offers gentle exfoliation and is supported by a purified Tasmanian pepperberry known to reduce the signs of inflammation and sensitivity often associated with exfoliation.

This formula contains a Tasmanian pepperberry derivative studied to help reduce irritation associated with acid use. This derivative is of plant origin and its colour varies seasonally and this colour variation may appear from time to time in the formula.

The pH of this formula is about 3.8. Lactic acid has a pKa of 3.8 and pKa is the most important aspect to consider when formulating with acids. The pKa implies the availability of acid. When pKa is close to pH, there is an ideal balance between salt and acidity, maximizing acid efficiency and reducing irritation. Higher pH numbers in such a case would increase the salt, making the formula even more irritating than if the formula were more acidic.

Alcohol-free, silicone free, nut-free, vegan, not tested on animals.