Hydrochloric acid is a strong mineral acid used in cosmetics to adjust the pH of a product. It helps ensure the product's acidity or alkalinity is within a stable and safe range for skin application. Its primary role is formulation stability and efficacy, not direct skin benefit.
NonePH adjusterVeganEvidence: High
BenefitNone 0 / 4
RiskModerate 1.8 / 4
Irritation
Sensitization
Rated by SpottyLabs' ingredient methodology, independent of brands.
Things to watch
Can be highly corrosive in concentrated forms
May cause severe irritation or burns if not properly diluted
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Hydrochloric acid is used in very small, controlled amounts to adjust the pH of a cosmetic product. This ensures the product remains stable, effective, and safe for skin contact.
Is hydrochloric acid safe for skin?
When used in cosmetic formulations, hydrochloric acid is present in extremely low concentrations and is neutralized to achieve the desired pH. In its diluted form within a finished product, it is generally considered safe.
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