Sienna x is an award winning spray tan available in a range of shades to suit all skin tones this method of tanning is quick and effective lasts up to 7 days it is the perfect sunless tanning option making it safe and available all year round tonight39s the night is sienna x39s rapid tan i offer this tan as there is no longer the need to wait 8 hours or overnight for your colour to develop so even if you have a special event in the evening you can still have your perfect tan ready