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2. UV filter - Wikipedia

   en.wikipedia.org/wiki/UV_filter

   An L39 UV filter with a 55mm filter thread. UV filters are compounds, mixtures, or materials that block or absorb ultraviolet (UV) light. One of the major applications of UV filters is their use as sunscreens to protect skin from sunburn and other sun/UV related damage.

3. Ultraviolet - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet

   They are contrasted with inorganic absorbers/"blockers" of UV radiation such as carbon black, titanium dioxide, and zinc oxide. [citation needed] For clothing, the ultraviolet protection factor (UPF) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to sun protection factor (SPF) ratings for ...

4. Antimutagen - Wikipedia

   en.wikipedia.org/wiki/Antimutagen

   The active components present in sunscreens can vary, thus affecting the mechanism of protection against UV light, which can be done through absorption or reflection of UV energy. [8] As UV light can cause mutations by DNA damaging, sunscreen is considered an antimutagenic compound as it blocks the action of the UV light to induce mutagenesis ...

5. The best pregnancy-safe sunscreens, according to experts - AOL

   www.aol.com/news/best-pregnancy-safe-sunscreens...

   EltaMD UV Active Broad-Spectrum SPF 50 $ at Dermstore. ... but they may “include chemical UV blockers as well to reach a higher SPF claim and make the zinc more spreadable,” she says. These ...

6. Our favorite dermatologist recommended sunscreen is just $9 ...

   www.aol.com/lifestyle/neutrogena-ultra-sheer-dry...

   Chemical sunscreens work by absorbing UV rays by using ingredients such as avobenzone, octinoxate and octisalate. Dermatologist agree that both forms — physical and chemical blockers — are ...

7. Sun protective clothing - Wikipedia

   en.wikipedia.org/wiki/Sun_protective_clothing

   A UPF 30 fabric that blocks 29 out of 30 units of UV is therefore blocking 96.7%. Unlike SPF (sun protection factor) measurements that traditionally use human sunburn testing, UPF is measured using a laboratory instrument ( spectrophotometer or spectroradiometer ) and an artificial light source, and then applying a sunburn weighting curve ...