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What is "Sun Protection Factor SPF" - Definition & Explanation

SPF measures the effectiveness of sunscreen on the body. the test for SPF is done by using a living organism or body to measure the length of time it takes for the skin to redden without coverage or protection.

Some other terms

Some more terms:

Has a longer or higher pile than velvet, but shorter than plush. It is pressed flat and has a high lustre made possible by a tremendous roller-press treatment given the material in finishing. Now...
A plain-woven cotton fabric; characterized by fine rib lines in the warp direction created by alternate coarse and fine ends, or by having two (or more) ends weaving as one alternately with a single...
A manufactured fiber derived from polyacrylonitrile. Its major properties include a soft, wool-like hand, machine washable and dryable, excellent color retention. Solution-dyed versions have...
Customer's Own Material -- a term describing when a customer, not the upholsterer or factory supplies material for use. It is a common practice to charge a cutting fee. This compensates somewhat for...
Spandex is an elastic type fiber that can be stretched many times its length and then spring back to the original length. Spandex is more resistant to washing, perspiration, and heat than latex....

Companies for Sun Protection Factor SPF:


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