C4 Intensiv Brightening Serum is a potent yet gentle treatment that harnesses four stable forms of Vitamin C—Ascorbyl Glucoside, Magnesium Ascorbyl Phosphate, Stay-C® 50, and BV-OSC—to visibly brighten dull skin, even tone, and minimize dark spots. Unlike unstable pure Vitamin C, this quad-C blend ensures stability, potency, and minimal irritation while protecting against UV stress, boosting collagen, and hydrating the skin. Infused with licorice-derived Oristart DPG and chamomile, it soothes inflammation and supports sensitive skin, promoting a luminous, healthy glow. Texture & Experience Lightweight, fast-absorbing serum that layers easily under moisturizer or SPF, leaving the skin refreshed, hydrated, and radiant. Paraben-free.
Directions After cleansing with Brightening Cleanser and toning with Everyday Renewing Toner, apply a thin, even layer to the face and décolleté, morning or evening. Follow with Illuminating Daily Moisturizer for enhanced hydration and brightness.