What is sunlight? How does ultraviolet rays affect the skin?

Browse By

What is sunlight? How does ultraviolet rays affect the skin?

Sunlight is the source of all energy. And has many benefits to life, such as helping to produce vitamin D in humans and having ultraviolet rays. (Ultraviolet) or UV rays (UV). However, like all biological processes that require balance, sunlight is a good thing. But there are limits. Because when exposed to too much UV rays (UV) that comes from sunlight, it can be harmful to the skin as well. Report from ufabet https://ufabet999.com

What is sunlight?

Sunlight consists of a spectrum of radiation. that vary according to wavelength Visible light has wavelengths in the range of 400-700 nanometers while invisible light Important ones include: Ultraviolet (UV) radiation has a short wavelength in the range of 280-400 nanometers and infrared light has a long wavelength in the range of 700 nanometers – 1 mm. Long wavelength radiation both visible light and infrared in sunlight There is less chance of penetrating deep into the skin and causing damage.

Short-wavelength UV light, which penetrates into skin cells, causes a high oxidative reaction.

How many types of ultraviolet (UV) rays are there?

There are three forms of UV light: ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC).

  1. UVB gives the skin the energy it needs to produce vitamin D. However, it has a direct negative effect on causing sunburn. and DNA damage
  2. UVA can also cause damage to the skin. especially premature aging
  3. UVC is blocked by the earth’s atmosphere. Therefore, it cannot penetrate and cause harm to the skin.

How does sunlight affect the skin?

Sunlight, especially UVA rays and UVB rays It can cause sunburn, premature aging, eye damage, a weakened immune system, photoallergic and phototoxic reactions, and even skin cancer. More and more doctors and dermatologists Warning of link between frequency of skin cancer and the extent of DNA damage. It has been found that over 90% of skin cancers are a result of exposure to sunlight. And it is known that the best treatment It is protection by protecting the skin from sunlight.
Learn more about sun protection.