Potassium Ascorbyl Tocopheryl Phosphate

Potassium Ascorbyl Tocopheryl Phosphate is a stable, water-soluble vitamin C/E derivative used mainly for antioxidant/brightening benefits, typically around ~0.5–5%. Compared with low-pH L-ascorbic acid, it is generally better tolerated and not inherently exfoliating, with low rates of stinging in patch/consumer-use contexts. However, in highly reactive or eczema-prone skin any vitamin C derivative can still trigger mild transient sting or redness, so it is best classified as gentle rather than exceptionally gentle. Safety Notes: In commercial skincare (primarily leave-on serums, lotions, and eye products), Potassium Ascorbyl Tocopheryl Phosphate is commonly used at very low levels (~0.01–0.1%) as an antioxidant/skin-conditioning co-active and to support formula claims when paired with other vitamin C derivatives. Higher-strength consumer-available brightening/antioxidant products typically use ~1–3%, with the upper end around ~5% observed in specialty/high-strength OTC leave-on formulations; above this, solubility, cost, and sensory/stability constraints usually limit further increases. It is uncommon in rinse-off at meaningful levels, where it is typically kept at the low end due to short contact time.