The Ordinary Glycolic Acid 7% Toning Solution 240 ml TRUSTPILOT_REVIEWS Increased Absorption: Vitamin D3 assists

Increased Absorption: Vitamin D3 assists the absorption and utilisation of calcium

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inner elbows

Provides All-Day-Long Comfort & Support

The Ordinary Glycolic Acid 7% Toning Solution 240 ml TRUSTPILOT_REVIEWS Increased Absorption: Vitamin D3 assistsThis pH of this formula is approximately 3. 6 and Glycolic Acid has a pKa of 3. 6. The pKa is the most important aspect to consider when formulating with acids as it implies acid availability. When pKa is close to pH, there is an ideal balance between salt and acidity, maximising the effectiveness of the acid and reducing the potential of developing irritation. Higher pH values in such a case would increase the concentration of salt, which counter