1Adopt biotechnology to color the skin, provides you with vivid tattoos pattern. 2Keep for a long time, which can last for about 1-2 weeks under normal washing. 3Various colors are available, close to the effect of tattoos, mild ingredients, low allergy rate. 4It can't be washed off directly, won't fade in water, it fades with the metabolism of the skin. 5The color slowly appeared in about 6 hours and reached the darkest after 20 hours.