Sodium Ascorbyl Phosphate
Also known as SAP
INCI: SODIUM ASCORBYL PHOSPHATE
CAS 66170-10-3 EC 425-180-1
chemical compound
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details
Description
chemical compound
Purpose
Function
Stable water-soluble vitamin C derivative; antioxidant; moderate tyrosinase inhibition; brightening activity via ascorbic acid release and free radical quenching
Profile
Properties
Silicone
Silicone free
Compliance
Regulatory Status
EU
Permitted
Safety
EXCELLENT
US
Permitted
Absorptionmoderate
Sensitizationnone
MoSadequate
NOAEL90 mg/kg
ConcernNone
Flags
vitamin-c-derivativeantioxidantbrighteningstablewater-solublemoderate-tyrosinase-inhibitionnot-quasi-drug-japanhyperpigmentation
Verdict
Water-soluble, stable vitamin C derivative with antioxidant and brightening activity. Hydrolysed to endogenous ascorbic acid with excellent safety profile. Tyrosinase inhibition is moderate compared to MAP or ascorbyl glucoside. Primary value is antioxidant protection and as a brightening complement in multi-active formulations. Useful supporting brightening ingredient rather than a primary active; combine with stronger actives for meaningful clinical impact.
US Note
No FDA restriction. Widely used in antioxidant and brightening formulations without concentration limit.
Assessment
Ratings
Reference