Sunscreen (also known as sunblock) is a lotion, spray or other topical product that helps protect the skin from the sun's ultraviolet (UV) radiation, and which reduces sunburn and other skin damage, ultimately leading to a lower risk of skin cancer. The best sunscreens protect against both UVB (ultraviolet radiation with wavelength between 290 and 320 nanometres), which can cause sunburn, and UVA (between 320 and 400 nanometres), which damages the skin with more long-term effects, such as premature skin aging.

Most sunscreens work by containing either an organic chemical compound that absorbs ultraviolet light (such as oxybenzone) or an opaque material that reflects light (such as titanium dioxide, zinc oxide), or a combination of both.

Typically, absorptive materials are referred to as chemical blocks, whereas opaque materials are mineral or physical blocks..

For more information about the topic Sunscreen, read the full article at Wikipedia.org, or see the following related articles:

Sunburn — A sunburn is a radiation burn to the skin produced by overexposure to ultraviolet (UV) light, commonly from the sun's rays. A similar burn can be ...  > read more

UV index — The UV index is an international standard measurement of how strong the ultraviolet (UV) radiation from the sun is at a particular place on a ...  > read more

Ultraviolet — Ultraviolet (UV) radiation is electromagnetic radiation of a wavelength shorter than that of the visible region, but longer than that of soft X-rays. ...  > read more

Blackhead — A blackhead (technically known as a open comedo) is a yellowish or blackish bump or plug on the skin. An open comedo or blackhead is a type of acne ...  > read more

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Sunscreen In A Pill