Inhibits excess melanin production to visibly even out skin tone over time.
Neutralizes free radicals from UV exposure and environmental pollution.
Supports collagen synthesis to maintain skin firmness and elasticity.
Sodium Ascorbyl Phosphate (SAP) is a stable, water-soluble derivative of Vitamin C. Unlike L-Ascorbic Acid, which oxidizes rapidly on contact with air and light, SAP remains stable in formulation and converts to active ascorbic acid only after it penetrates the skin — delivering Vitamin C exactly where it’s needed.
Once absorbed, SAP is enzymatically converted into ascorbic acid within the skin. There it inhibits tyrosinase — the enzyme responsible for melanin overproduction — while simultaneously stimulating collagen synthesis and scavenging free radicals. Because it converts on-site rather than in the bottle, it doesn’t degrade before reaching your skin.
6×
more stable than L-Ascorbic Acid — SAP won’t oxidize in the bottle, so every drop delivers full-strength Vitamin C to your skin.
Not all vitamin C for skin is created equal. Most vitamin C brightening serums use L-Ascorbic Acid — a potent but unstable ascorbic acid that oxidizes before it reaches your skin. Our stable vitamin C serum uses Sodium Ascorbyl Phosphate (SAP vitamin C), a form that converts to active vitamin C only after penetrating the barrier. As an antioxidant serum, it neutralizes free radicals while fading vitamin C dark spots over time. Paired with Vitamin E for synergistic protection, Aloe Vera for a soothing base, and Hyaluronic Acid for deep hydration — all built on a Ceramide 3 foundation. Try the full formulation in The Serum C+E on Amazon.
Most Vitamin C serums use L-Ascorbic Acid — an unstable form that starts degrading the moment the bottle opens. We chose Sodium Ascorbyl Phosphate because it stays active in formulation and converts to ascorbic acid only inside the skin. Combined with Ceramide 3, it brightens and protects without compromising the lipid barrier.