Health & Fitness This is what an SPF number actually means

07:55  10 may  2018
07:55  10 may  2018 Source:   countryliving.com

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I've always prided myself on being a vaguely intelligent human, and yet here I am, having almost reached the ripe old age of 27, and up until today I didn't know what the SPF number of sunscreen actually meant .

But what do the SPF numbers on bottles of sun lotion actually mean ? While some may think the ascending factors (10, 15, 20, 30, 50) are according to some random numerical scale, there is actually a significance to each grade.

Obviously it means 'sun protection factor', but the specific number bit was news to me.: This is what an SPF number actually means © Carol Yepes - Getty Images This is what an SPF number actually means Most of us know that SPF stands for 'sun protection factor', but what do the numbers next to it actually mean?

Obviously they indicate the strength of the product, but what is the protection difference between SPF 15 and SPF 50?

Well, they indicate how many multiples of time you're safe to be out in the sun before you burn.

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The Skin Cancer Foundation describes it like this:

"If it takes 20 minutes for your unprotected skin to start turning red, using an SPF 15 sunscreen theoretically prevents reddening 15 times longer - about five hours."

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But what do the SPF numbers on bottles of sun lotion actually mean ? While some may think the ascending factors (10, 15, 20, 30, 50) are according to some random numerical scale, there is actually a significance to each grade.

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And it makes total sense. SPF 15 will give you 15 times the number of minutes before you burn that you'd have with no sunscreen protection at all.

Now you may have already known this, but there's no harm in a reminder when it comes to sunburn and protecting ourselves from skin cancer, so go forth and spread this knowledge!

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