The Ordinary’s Glycolic Acid 7% Toning Solution exfoliates and tones with 7% glycolic acid, amino acids, aloe vera, ginseng, and tasmanian pepperberry. Glycolic acid is an alpha hydroxyl acid that exfoliates the skin. This 7% toning solution offers mild exfoliation for improved skin radiance and visible clarity. The formula also improves the appearance of skin texture with continued use. With its a studied tasmanian pepperberry derivative, this solution helps reduce irritation associated with acid use. This derivative is of plant origin and varies in colour seasonally and this colour variation may be apparent in the formula from time to time. The formula is further supported with inclusion of ginseng root and aloe vera for both visible radiance and soothing benefits. This pH of this formula is approximately 3.6. Glycolic Acid has a pKa of 3.6 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.
Benefits:
Exfoliates the skin
Refines skin texture
Improves skin radiance
Cruelty-free & vegan
Formulated without alcohol, oil, silicone, nuts, or gluten
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