This organic SPF15 sun lotion has a naturally derived ingredient which works to speed up your body's ability to tan. The key active ingredient that works this 'magic' is called Inositol, this is a naturally occurring nutrient which is derived from the fruits of the Carob tree and which acts as a stimulant for the formation of melanin. Trials on human volunteers have shown that the speed of tanning increases by 25%, the intensity or depth of suntan increases by over 28%, and when used after obtaining a tan, reduces the tan-fading rate by almost 50%. A SPF15 sun lotions offers 93% protection against UVB rays in comparison a SPF30 lotion only offers 4% more protection!