What is the recommended maximum percentage concentration of AHAs in skin products?

• A. 5% or Less
• B. 10% or Less
• C. 15% or Less
• D. 20% or Less

Answer: (B)

AHAs exfoliate by loosening the bonds between dead skin cells, so safety depends on how strong the exposure is. For over-the-counter, consumer skincare products, the commonly recommended maximum is 10% or less. This level provides noticeable exfoliation while keeping irritation and photosensitivity risks lower, especially when you use sunscreen and start with gradual usage. Higher concentrations, like 15% or 20%, are generally reserved for professional peels done under supervision, where the skin can be prepped and post-care managed carefully. Gentler products around 5% exist for sensitive skin, but they’re milder and slower to show results. So, 10% or less is the best answer for safe, typical home-use products.