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Sodium Hydroxide
Sodium Hydroxide
This letter is an internal editorial classification of the ingredient, not a clinical evidence rating. It does not certify safety, suitability for your skin or the SPF of a finished product.
ph adjuster
A pH adjuster (lye) used in tiny amounts to bring formulas to skin-compatible pH. Despite sounding harsh, it's completely safe at the trace amounts used in cosmetics. Essential for AHA/BHA products.
Benefits
pH regulation, essential for acid-based formulas
Risks & concerns
None at cosmetic concentrations (trace amounts).
Best for
Dry skinOily skinCombination skinSensitive skinNormal skin
Technical details
- INCI name
- Sodium Hydroxide
- CAS Number
- 1310-73-2
- Category
- ph adjuster
- Comedogenic rating
- 0/5
- Also known as
- lye, caustic soda