I recently saw comment that got a decent amount of downvotes pointing out that it’s possible sunscreen isn’t doing as much as advertised and the extra confidence spending time in the sun was probably a notable cause of skin cancer. I hope that person comes across this to get their dose of “told you so.”
The actual investigation
Also fucking hell. Claiming 50+ but gets a 4
After the Ultra Violette product returned an SPF of 4 when tested at the Sydney lab, we sent a different batch of this product to an accredited, specialised laboratory in Germany, the Normec Schrader Institute, for a validation test. The validation test returned an SPF of 5.
Interesting to see that companies which pass in the chemical filter category fail in the mineral filter part. For example, in the link you posted Neutrogena’s chemical filter has measured SPF of 52 but their “SPF50+” zinc version is actually in the 20s
It seems like all the zinc oxide mineral sunscreens have significantly lower spfs than stated.
