The most natural and economical ways are exercise and sunbathing. There are also some tanning methods, including:

1, sun lamp. The disadvantage is that the ultraviolet rays in the sun lamp directly act on the bare skin, with high density and strength, and the sun lamp is no less harmful to the skin than exposure to the hot sun for a long time.

2. Tanning products. At present, the main component of tanning is the active substance (DHA phosphate diacetone) extracted from eye sucrose, which will react with protein of skin keratinocytes and turn brown. Compared with ultraviolet rays that stimulate the skin to secrete melanin and even damage the dermis, tanning products only act on the cuticle of epidermis, which is undoubtedly a safer choice.