BTFL SKN BRNZR 2 MEDIUM. Benefits: Available in a variety of universally flattering shades, this bronzer delivers the perfect summer glow. The blurring, sweatproof, and humidity-proof formula has a powdery-cream finish that melts into skin, easily building from soft to bold to achieve natural to more-defined, contoured looks.. Key Ingredients: Hyaluronic Acid: Hydrates skin and revitalizes the outer, visible layers.. Niacinamide: Smooths.. Golden Vitamin C: Visibly brightens.. Research Results: Lasts up to 16 hours. Sweat proof + humidity proof -Skin is 2x more hydrated in 1 hour*. *Tested on 15 people.