The sun offers
light to Earth, including ultraviolet rays. The ultraviolet part of the
spectrum is short, high-energy wavelengths of light. The ultraviolet light
reaching the earth can be classed into the ultraviolet A (UVA) range with a
wavelength of 320 to 400 nanometers (nm) and ultraviolet B (UVB) range of 280
to 320 nanometers (nm).
UV filters absorb
or scatter UV rays, preventing them from reaching the skin. The UV-absorbing ingredients
absorb incoming radiation and then release it again as heat or converts it to
another wavelength of light. The UV scattering ingredients simply reflect the
light into different directions.
Because of it high
energy, ultraviolet radiation damages not only the skin but also products and
product containers.
UV filters are
used to absorb or reflect ultraviolet rays contained in sunlight or artificial
light. Uv filters can be used to protect the skin from the harmful effects of
ultraviolet light. You can easily find them in skin care products. Popular ones
are Homosalate, Avobenzone, Octyl Salicylate, OMC, Octocrylene and so forth.
Normally these ingredients are mostly required during summer because sunscreen
products are wanted much more during this time of the year.
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