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Designed to target textural irregularities and lackluster tone, The Ordinary Glycolic Acid 7% Toning Solution contains  7% Glycolic Acid, Amino Acids, Aloe Vera, Ginseng and Tasmanian Pepperberry.
 
Glycolic Acid is an alpha hydroxyl acid that exfoliates the skin. The Ordinary Glycolic Acid 7% offers mild exfoliation for improved skin radiance and visible clarity. The formula also improves the appearance of skin texture with continued use.
 
The Ordinary Glycolic Acid 7% 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 colour variation may be apparent in the formula from time to time. The Ordinary Glycolic Acid 7% 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.
 
Note: While exfoliating acids can result in quick visible benefits, we generally suggest indirect forms of skin exfoliation in favour of direct forms such as this formula due to potential inflammation and sensitivity associated with acids. Please refer to NIOD's Non-Acid Acid Precursor for such a reference.
 
We suggest this product be used within 12 months after opening.