Sunlight contains ultraviolet (UV) radiation, which consists of different types of rays. The types of UV radiation you`re probably most familiar with are UVA and UVB rays. These rays can affect your skin in different ways.

What is UV radiation?

UV radiation is a form of electromagnetic energy. It can come from natural sources, such as sunlight, as well as artificial sources, such as lasers, black lights, and tanning beds.

The sun is the most significant source of UV radiation. It`s the product of a nuclear reaction at the sun`s core, and the radiation travels to earth via the sun`s rays.

UV rays are classified according to wavelength: UVA (longest wavelength), UVB (medium wavelength), and UVC (shortest wavelength).

Quick comparison chart

Here`s a quick comparison of the three main types of UV rays.

What you need to know about UVA rays

Here are some important facts about ultraviolet A (UVA) rays and how they affect your skin.

1. They have higher wavelengths, but lower energy levels than other UV rays.

2. They`re more penetrating than UVB rays, which means they can affect cells deeper in the skin.

3. They cause indirect damage to DNA.

4. They cause skin to age prematurely, leading to visible effects such as wrinkles. They`re also associated with some skin cancers.

5. Unlike UVB rays, they`re not absorbed by the ozone layer. About 95 percent of the UV rays that reach the ground are UVA rays.

6. They cause an immediate tanning effect, and sometimes a sunburn. The effects of UVA rays tend to appear right away.

7. UVA rays are the main type of light used in tanning beds.

8. They can penetrate windows and clouds.

So we have to find the best way to protect yourself and your lovers far away from UV damage.

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