St. Tropez Self Tan Express Bronzing Mousse is a self tanning mousse that provides a long-lasting, flawless bronze glow to the skin. The St. Tropez Self Tan Express Advanced Bronzing Mousse uses a 100 per cent natural tanning agent and intelligent shade technology to ensure that tan is suited to individual skin tones for a natural, streak-free glow. The self-tan actives in St Tropez will continue to work for up to eight hours, developing into the desired shade. For a light, sunkissed glow, shower after one hour; for a golden, medium tan leave the tan on for two hours, and for a deep, dark bronze, apply the tan for three hours. It is also paraben, sulfate, and pthalate free.