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 315 – 280 nm), UVC (wavelength less than 280 nm)
Each type of UV rays with different energy levels will have different levels of harmful effects on the environment and human health.
UVA rays are the lowest of the 3 rays above, can penetrate clouds, air, cause skin aging, long-term exposure, without care, and protection will affect the structure. skin cells, leading to skin cancer.
UVB rays: still able to partially penetrate through ozone and atmosphere, causing skin damage, dehydration, and skin irritation.
UVC rays: UV rays have the highest energy, causing skin irritation, but it is prevented by the ozone layer.
UV rays cause skin cancer
This is one of the most prominent agents that cause skin cancer such as basal cell carcinoma, melanoma, etc.When the skin is exposed to ultraviolet rays, the pigmentation cells release melanin from brown. dark to black protects the skin, but once it has reached and exceeded the mutation, they can develop a tumor.
UV rays cause sunburn
UVB radiation is the main cause of sunburns and skin redness. This is because the skin absorbs energy from UV rays, causing skin cells to become damaged. At this time, more blood will flow into the damaged skin to heal, so the skin will turn red when sunburned.
Causes skin aging
UV rays can work deeply under the skin, will destroy collagen and connective tissue of the skin, which will cause phenomena such as brown spots, wrinkles, premature skin aging. .
UV rays damage the eyes
When you are exposed to UV rays for a long time, it will damage tissues causing diseases such as keratitis, red eye pain, retinal damage, …
The above are just the basic harmful effects of UV rays to your skin and health and it will be worse if you are subjective and neglect. Therefore, please protect your skin by measures such as using sunscreen every day, wearing sunscreen clothes, wearing glasses, .. okay.