Comments on: How to determine your personal SPF number?

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.

By: Carolyn

Carolyn — Wed, 08 Jul 2009 20:08:53 +0000

This is a great blog post and such an important topic — I work with a company called Keys Soap, and co-founder and melanoma survivor Wendy Steel has an excellent related article on her blog that readers might want to take a look at, including tips, information and resources about skin safety and chemical-free skin protection sunblocks and other skincare products, plus a downloadable skin cancer awareness card. They can be found at:
http://keys-soap.com/keysblog/?p=171

By: sesame

sesame — Sat, 04 Jul 2009 00:14:24 +0000

I just remember reading this from Paula Begoun’s Cosmetic Cop and she said: “What about applying foundation (one that doesn’t contain sunscreen) over the sunscreen you’ve just applied? That depends on several more factors, such as how much you apply, how thick or oily it is, or what kind of sunscreen you are using. To eliminate any dilution and to add more protection, you can choose to wear a foundation during the day that contains sunscreen. Voila, no more worries.”