St. Tropez Self Tan Express Bronzing Mousse 6.7oz / 200ml. Tropez is an advanced, no-fuss formula for a light sun-kissed glow in just one hour or a deep, dark bronze hue in as little as three hours. The best part is that you can customize it to suit your needs. Leave on for one hour for a healthy glow, two hours leaves you with a golden bronze and three hours creates a dark tan.