What percentage of any concentration of alpha-hydroxy acids is prohibited?

• A. 15%
• B. 30%
• C. 25%
• D. 10%

Answer: (B)

The correct answer indicates that any concentration of alpha-hydroxy acids above 30% is prohibited. Alpha-hydroxy acids (AHAs) are commonly used in cosmetic products for their exfoliating properties, which can improve skin texture and tone. However, there are safety regulations and guidelines regarding their concentration in products because higher concentrations can lead to increased risks of skin irritation, sensitivity, and damage, especially when used improperly. The prohibition of concentrations above a certain percentage is intended to safeguard consumers and ensure manageable and safe use of these ingredients, preventing potential adverse effects that could arise from misuse or misapplication. Hence, understanding the threshold at which AHAs become unsafe is critical in the context of safety and sanitation practices.