Before introducing how to prevent sunburn whitening ingredients, let's first review what ultraviolet is.

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Ultraviolet light refers to the light from 200 to 400nm in the sunlight. It can be divided into 320 wavelengths (UVA), 320 to 400nm, UVB to 280 and 320nm, and short wave ultraviolet (UVC) wavelengths to 200 to 280nm.

UVA has the strongest penetrating power, reaching 100 times the surface of the UVB. It can cause sunburn and sunburn, and can enhance UVB's damage to the skin. It can penetrate into the dermis, which is the main cause of skin aging.

UVB has the highest carcinogenicity, and it is 1000 times that of UVA.

UVC can be blocked by the ozone layer.

IR is infrared, which can cause sun redness, microvascular dilatation, dermatitis, and promote the carcinogenicity of ultraviolet rays.

It is easy to see why we need to protect ourselves from sunburn if we know the damage that ultraviolet rays may cause to the skin.

Because ultraviolet radiation can cause skin cancer, skin aging, sunburn, melanin deposition, and black spots and freckles. Sunlight also accelerates skin aging by ten times.

UV damage is cumulative.