St. Tropez Self Tan Express Bronzing Mousse St. Tropez Self Tan Express Bronzing Mousse is a fast-acting, award-winning, customizable tanning foam that allows you to choose your shade by controlling the rinse-off time: 1 hour for light, 2 hours for medium, or 3 hours for a deep, dark tan. It is streak-free, quick-drying, and features a pleasant scent. Authentic!! NWB Size 3.3oz/100ml Retails for $36