Formulation · 7 min read
Stability Considerations for AHA Products
Light, oxygen, metals, and pH drift — the four enemies of a stable glycolic formula.
Updated 11 June 2026 · Reviewed by GlycolicAcid.com.au editorial
Glycolic acid itself is robust but its formula partners are not. Niacinamide can hydrolyse to nicotinic acid at low pH; vitamin C oxidises rapidly. Always run accelerated stability for 12 weeks at 40°C and 45°C.
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