Researched by Helena DeMaria-Williams
Formula IngredientAntioxidantSodium Ascorbyl Phosphate
INCI: Sodium Ascorbyl Phosphate
Sodium ascorbyl phosphate (SAP) is a stable, water-soluble derivative of vitamin C (L-ascorbic acid). It offers excellent stability up to pH 7, overcoming the rapid oxidation issues of pure ascorbic acid. While its skin penetration and potency are lower than L-ascorbic acid, it provides proven photoprotective, brightening, and antimicrobial benefits with significantly better tolerability.
Category
Antioxidant
Irritation Risk
Low
Skin Types
all skin types, sensitive, acne-prone, hyperpigmentation, anti-ageing, dull skin
What does this do in a formula?
antioxidant, skin brightening, anti-ageing, collagen support, anti-acne, photoprotection
Is Sodium Ascorbyl Phosphate safe? Key considerations
Can Sodium Ascorbyl Phosphate cause irritation?
Low RiskSignificantly less irritating than L-ascorbic acid due to its near-neutral pH stability. Well tolerated by most skin types including sensitive skin. No EU CosIng Annex restrictions.
Does Sodium Ascorbyl Phosphate increase sun sensitivity?
No RiskDoes not increase photosensitivity. Provides photoprotective antioxidant benefits. SPF is still recommended for general skin health.
Is Sodium Ascorbyl Phosphate safe during pregnancy?
SafeTopical vitamin C derivatives are widely considered safe during pregnancy. No known reproductive or developmental concerns.
How does Sodium Ascorbyl Phosphate work?
Sodium ascorbyl phosphate (SAP) is a stable, water-soluble derivative of vitamin C (L-ascorbic acid). It offers excellent stability up to pH 7, overcoming the rapid oxidation issues of pure ascorbic acid. While its skin penetration and potency are lower than L-ascorbic acid, it provides proven photoprotective, brightening, and antimicrobial benefits with significantly better tolerability.
Which products contain Sodium Ascorbyl Phosphate?
Shop products that contain Sodium Ascorbyl Phosphate
