SELF TAN THAT'S MORE THAN SKIN DEEP. Dermachromatic TM Colour Technology is scientifically developed in line with clinical trials for optimum results, perfectly blending active ingredients, hydration and colour tone to best enhance your skin's tone and colour longevity. Technocolor 1 Hour Express Self Tanning Foam Sapphire has been formulated for fairer skin tones. Featuring a blue-grey guide colour and low level active ingredients to counteract the development of orange tones for a natural, cool colour.