Self Tan Express is St. Tropez’s most revolutionary tan yet. It lets you select how dark you want to go by choosing when you shower. The formulation contains fast-acting ingredients that absorb quickly into the skin while intelligent shade technology allows you to select your depth of colour; For a light, sunkissed glow – shower after 1 hour. For a golden-bronze tan – leave on for 2 hours. For a deeper, darker result – wait 3 hours or more. Can achieve approximately 13-15 spray tans per 1 Litre.