The principle of tanning is that the skin is irradiated by ultraviolet rays, which causes tyrosinase to be activated and produces a catalyst, which catalyzes the synthesis of pigment cells and secretes melanin. After the melanin is metabolized, it gradually reaches the surface of the skin and darkens the complexion. There are two main methods of tanning: natural (sun tanning) and artificial (sunless tanning). The artificial tanning method is achieved through artificial tanning cream or bronze tanning products. Tanning agents can promote the skin's natural tanning process and stimulate its natural protection system to achieve the same effect as natural tanning in the absence of natural light. The use of unparalleled sunless self-tanning ingredients Melanotan, DHA, etc. make the skin tone more subtle and natural, and achieve a clear and healthy wheat color in just a few hours.