What spray-tan to use on olive skin tone? Naked Tan recommends using the Chocolate solution with 15% DHA for a deep chocolate brown colour, up to 5 shades darker. All our solutions are made with a combination of the most natural tanning ingredients and contain no nanoparticles, no parabens, no SLS sulphates and no alcohol. Ashed based tan. Fast-drying formula. Will achieve a tan 5 shades darker. Wash n wear in only 2 hours.