Tanned skin generally takes 6-9 months to gradually lighten, but this varies from individual to individual. The darkening of the skin is caused by a gradual increase in the amount of pigment produced by subcutaneous pigment cells stimulated by ultraviolet light, so that visually the skin color becomes darker. It takes more than 6 months for the skin to gradually turn white after tanning, because the pigment produced by the pigment cells needs a long time to metabolize before it can gradually become less. Daily life should do a good job of sun protection, when you go out, you can wear long clothes, long pants, sunglasses, masks, hats, through physical sun protection, to avoid ultraviolet stimulation of the skin, in order to prevent tanning more serious. In addition, you can also eat more food containing vitamin C, such as lemon, dragon fruit, etc., can accelerate the recovery of skin color.