What It Is: A water-based, vitamin-enriched tanning serum designed specially for your face, neck, and chest. What It Does: Infused with St. Tropez's unique Sunshine Complex, this serum creates a natural-looking tan without the harmful effect of UV rays. It's brimming with skin-loving ingredients think hyaluronic acid as well as vitamins C and D boosters to help brighten your complexion for a beautiful glow. How to use: Prep your skin by exfoliating and moisturizing dry areas. Mix serum into your moisturizer or apply it directly onto your skin, blending evenly across your face, neck, and chest. Wash your hands after use. A medium, golden tan will develop over 4-8 hours. About St. Tropez Proud to be the leading tanning brand chosen by professionals, celebrities, and beauty editors alike, St. Tropez boosts an extensive collection of self-tanning products formulated to help you achieve a streak-free glow. Whether you're looking for the deepest shade of bronze or a light, sun-kissed glow, each easy-to-apply product helps you get professional-grade results at home.