The Ordinary Lactic Acid 10% + HA Serum 30ml ^Sale

Lactic Acid is an alpha hydroxy acid that exfoliates the skin. This 10% formulation offers mild exfoliation and is supported with a purified Tasmanian pepper berry known to reduce signs of inflammation and sensitivity that are often associated with exfoliation.

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

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 implies acid availability. When pKa is close to pH, there is an ideal balance between salt and acidity, maximizing effectiveness of the acid and reducing irritation. Higher pH numbers in such a case would increase salt which counter-intuitively would make the formula even more irritating than if the formula was more acidic.

• Lactic Acid 10%, Hyaluronic Acid 2%, Berry Tasmanian Pepper.
• How to use: shock treatment: use once a day for 28 days, in the evening. Can irritate the skin, although it is uncommon, if it does, apply it once a week. Avoid contact with the eyes. Use a sunscreen the next day when using this product.
• Application: 30 ml pipette.