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The skincare industry is always a booming business, but with that being said, there’s always some friendly competition with other estheticians also looking for clients. Whether you’re familiar with Tik Tok, or typically stay away from social media, skin care specialists regularly look towards this popular app to market their esthetics business.
You may have heard that: “SPF 30 absorbs 97% of the UV” or “SPF 50 absorbs 98% of the UV” These numbers are from a math model and it’s quite simple! The math model is: 1 – (1 ÷ SPF) 1 divided by the sunscreen’s SPF, subtracted from 1. With an SPF 30: 1 – (1 ÷ 30) = 1 – (1/30 or 0.0333…) = 1 – 0.0333… = 0.9666… The ellipses (…) means repeating, the 666 in the decimal number 0.9666 repeats forever.
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