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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:

Doesn't necessarily mean that it kills bacteria. A stat means that it may simply be slowing growth or holding the death to growth rates of bacteria (same for fungal stats) more or less in...
Pleats allow fabric to be fitted in one area and fuller in another area, but they also cause fullness at the end of the pleat. A pleat is made by folding the fabric, and stitching a straight line at...
A cap is a form of headgear. Caps are generally soft, and often have no brim, or just a peak (like on a baseball cap). For many centuries women wore a wide variety of head-coverings which were...
Enzymes derived from genetically modified organisms (GMOs). GMOs are obtained by altering the genetic material of cells or organisms in order to make them capable of making new substances or...
In a woven fabric, the yarn running from selvage to selvage at right angles to the warp. Each crosswise length is called a pick. In the weaving process, the filling yarn is carried by the shuttle or...

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