How much of a sunscreen stick do you need to apply? I did some experiments to find out, and I was pretty shocked at the results.
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In this video:
0:00 Background
1:53 Amount applied, SPF and application time
4:31 Number of passes on the face
5:09 Number of passes on the arm
5:50 Main form of sunscreen?
6:38 Missed spots
7:58 Conclusions
Blog post with full experimental procedures here:
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🙋🏻 I’m Michelle, a chemistry PhD, cosmetic chemist and science educator, here to explain how beauty products work, debunk myths, and help you make smarter decisions about your skincare, hair and makeup!
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