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Suncreen Really Works?

The effective ingredient of sunscreen is the combination of organic and inorganic active ingredients. Inorganic ingredients (e.g. zinc oxide or titanium oxide) reflect or scatter ultraviolet (UV) radiation. Organic ingredients (e.g. octyl methoxycinnamate (OMC) or oxybenzone) absorb UV radiation, dissipating it as heat. Some sunscreens protect your skin from the all two UV radiation. Both UV-A and UV-B cause sunburns and damaging effects such as skin cancer.

Three types of ultraviolet radiation wavelengths:

• UV-A: The longest wavelength and not absorbed by the ozone. It penetrates the skin deeper than UV-B.
• UV-B: Responsible for sunburns. It is partially blocked by the ozone layer.
• UV-C: This is totally absorbed by the earth's atmosphere; we encounter it only from artificial radiation sources.
  

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