St. Tropez - Self Tan Extra Dark Bronzing Mousse - 200ml Get your deepest and darkest tan tan with our new Self Tan Extra Dark Bronzing Mousse. A light velvet mousse with a guide color that leaves a soft, smooth and flawless finish on the skin. Get your deepest and darkest tan tan with our new Self Tan Extra Dark Bronzing Mousse. A light velvet mousse with a guide color that leaves a soft, smooth and flawless finish on the skin. St.Tropez Quick Intelligent Tan Development System allows the guide color to rinse after 4 hours for a dark tone or after 8 hours to achieve the same color depth as after 2 weeks of beach vacation.