SPF means sun protection factor.

INTEGUMENTERY SYSTEM MISCELLENOUS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	true
B	false
C	Either A or B
D	None of the above

Explanation:

Detailed explanation-1: -SPF is a measure of how much solar energy (UV radiation) is required to produce sunburn on protected skin (i.e., in the presence of sunscreen) relative to the amount of solar energy required to produce sunburn on unprotected skin. As the SPF value increases, sunburn protection increases.

Detailed explanation-2: -SPF stands for Sun Protection Factor, and the number beside it indicates how well the sunscreen protects skin against sunburn.

Detailed explanation-3: -What does SPF 50 mean? SPF 50 blocks 98% of UVB rays, and allows 2% of UVB to reach your skin, or not quite half of what SPF 30 allows. Keep in mind that NO sunscreen blocks 100% of UV rays, and so the increase from SPF 50 gets smaller and smaller as the level of protection goes up.

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