Benzoyl Peroxide
BPOBenzoyl Peroxide 2.5%Benzoyl Peroxide 5%
Preservative
Benzoyl peroxide is a chemical that kills bacteria and helps to dry out pimples and acne. It's often used in skincare products to help prevent breakouts.
Moderate Concern
Source: FDA GRAS list
Benzoyl peroxide can cause skin irritation, especially at high concentrations, but it's generally considered safe when used as directed.
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Last updated: May 16, 2026