The harmful effects of UV rays on skin and health

UV (Ultraviolet) rays, also known as ultraviolet rays, are electromagnetic waves whose wavelengths are shorter than those of visible light but longer than those of X-rays. Based on the impact of ultraviolet rays on human health and the environment, UV rays can be divided into three categories: UVA (wavelength 380 – 315 nm), UVB (wavelength […]