Sodium Hydroxide
Strong base that acts as a pH adjuster in cosmetics. Added in microdoses to bring the formula acidity to the required level.
Protection
Evidence by route
Topical application
CWeak evidence. In vitro data, open-label studies, or expert consensus.
In finished cosmetics it only works as a pH adjuster, not an active. After neutralizing acids it converts into a neutral salt.
Tolerability and safety
Irritation potential
LowAllergen risk
LowPregnancy
SafeSkin types
Suitable for
OilyDrySensitiveCombinationNormal
Frequently asked questions
Is Sodium Hydroxide safe during pregnancy?
Sodium Hydroxide is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Sodium Hydroxide for?
Sodium Hydroxide suits: oily, dry, sensitive, combination, normal.