Oskia Adaptive Tan Mist Tri-Phase Self Tanning Water £60 £60 from Space NK Product Specs Size 100ml What we love Results Develops in a few hours and lasts up to 10 days Its Express Tan is the newest addition to my tanning collection is the 1 Hour Express formula, which develops into a radiant, golden glow in, you guessed it, an hour. For tans in hurry, viral Bali Body 1 Hour Express Tan is a great buy - giving you a bronzed glow in just an hour.