Comments on: How to determine your personal SPF number?

By: sesame

sesame — Wed, 21 Dec 2011 03:12:52 +0000

It’s not just the numbers…you also got to check the active ingredients.

By: Lina

Lina — Tue, 20 Dec 2011 04:20:45 +0000

yesterday i went shopping with my friends, I applied sunblock with with spf 30 for my face and spf 24 for my body. but still it didn’t work. I got burn, and now tan (it’s only 40 minutes under the sun). And now i got confused what number of spf i should use…

By: sesame

sesame — Fri, 10 Jul 2009 03:38:16 +0000

I’m not sure about the 7 layers – first time reading this. But I do know you need to apply at least half a teaspoon of the lotion to get the full SPF. Perhaps that equals to about 7 layers?

For the combination, I thought it was the higher one? I remember a dermatologist saying this at a workshop.

By: stiffedneck

stiffedneck — Thu, 09 Jul 2009 19:57:59 +0000

I read somewhere said with make up that has SPF in it, you have to apply 7 times as much make up of what you usually do to get that amount of protection claimed on the bottle. For example, if the bottle of foundation said SPF 15, apply 7 layers of foundation, then you get the actual SPF 15.

And when you combine SPF 15 and SPF 30, you only get SPF 15. The protection goes with the lower number, not the combination of both. I don’t know why it works that way, but I remember its stated like that in some health mag.

By: sesame

sesame — Thu, 09 Jul 2009 01:36:49 +0000

Ah yes, I’ve used your sunscreen at one stage and liked it except for the nano bit.