Why sunscreen is anti-sun?

In the sun, there are 3 UV rays: UVA, UVB, UVC, but in these types, only UVC rays are prevented by the ozone layer, unable to penetrate the ground, and the other 2 rays penetrate and are harmful. Great for human skin and health. Therefore, the use of protective clothing, sunscreen to avoid skin damage, aging, darkening or skin cancer is very frequent. So, what ingredients in sunscreen can protect against UV rays?

In addition to water and oil similar to other creams, in sunscreens are added sunscreen to reflect UV rays (ultraviolet rays).

With physical sunscreen, the mechanism of UV reflection and diffusion like a parachute prevents this ray from affecting the skin. The most commonly used sunscreens in this sunscreen are oxidized zinc (ZnO zinc oxide) and oxidized titanium (Titanium Dioxide TiO2). ZnO completely blocks 2 UVA, UVB rays, TiO2 can only block about 50%. Since these are very safe ingredients, physical sunscreens are suitable for a wide range of skin types, especially sensitive skin and children’s skin.

Chemical sunscreens act as filters, absorbing UV rays, absorbing and converting them into lower energy rays, safe and harmless to the skin.
In this sunscreen is composed of many different chemicals combined and each can partially filter out UVA and UVB rays. For example, Avobenzone can completely filter UVA, but not UVB. Therefore, to achieve the highest efficiency, people often combine with Ozybenzone, a UVB filter.

Up to now, you have the answer to the above question, right, whether indoors or outdoors, you also need to apply full sunscreen to protect and take care of your skin in the best way. .