About SPF

SPF is mainly UVB protection index. Its meaning is: the extension to prevent drying out the red time in multiples.

The scientists testing, in the absence of any protection under the circumstances, the average ultraviolet radiation 15-20 minutes later, we will have the skin erythema.

SPF1 is an extension of times, that is not sunburn 15-20 minutes of time. That SPF15 is 15 times the Sun extended time. About 4-5 hours of sun time.

PA is the SPF UVA, and UVA + the number of representatives of the defense capability, initially originated from Japan, also common in Europe. PA + + + that have a strong ability to UVA sunscreen.

TIPS: a comprehensive understanding of melanoma, of course, we must continue to practice the whitening plan, in this spring and summer can be more lucent white, crystal.

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