Sodium ascorbyl phosphate (SAP) is specifically produced for use in cosmetic products.
White-to off-white powder, mild odor.
Soluble in water (clear solution at 10% concentration), pH 9-10 (3% in water), may discolor in pH <6.
INCI Name: Sodium ascorbyl phosphate
Properties: Potent antioxidant (shown to be able to protect skin from oxidative damages). Can improve appearance of aged and fragile skin. Widely used as add-on ingredient in skin-lightening products to correct hyperpigmentation and age spots.
Antioxidant effect can be increased by adding L-ascorbyl palmitate and/or vitamin E.
Use: Add at the end of the formulation process just before the preservative, by pre-dissolving in a little distilled water. Usual concentration 0.2-3%, but up to 10%.
For external use only.
Applications: Lotions, creams, sun care & after sun products, makeup products.