Help please! Can anyone confirm or debunk my logic.
Every year i have a load of half used suncreams of varying factors. To save space i combine some if them into one bottle. I allways tip higher factor into lower bottle. So say tip some factor 50 into a third full bottle of factor 30. So anyone using the bottle gets at least the protection it says, if not more. In my head, this mixed bottle has a factor of about 40 ie ive taken an average.
But then, if i have put random face cream on, with no spf, then add some factor 30 afterwards... I assume i have factor 30 protection on my face. By my previous logic its diluted and only worth factor 15.
What do you think?
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Mixing suncream illogically
3 replies
magratvonlipwig · 30/06/2016 20:24
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