2 Comments
User's avatar
Fabio's avatar

Thanks Richard! As usual, very informative post!

I knew sunscreen lost efficacy if not applied in the right amount, but those numbers are really concerning, I'm certain that the majority of people don't use enough of it, plus they even use a lower SPF, that's no doubt as to why they tan a lot even with sunscreen on, because basically they have none.

I'm going to make sure I use enough (luckily, like you, I put it on generously too).

"there’s no need for a sunscreen for skin surfaces covered by clothing", in this sentence, do you mean protective clothing? I tested my clothing using UV test cards and the sun or even better a UV flashlight set at a distance to yield a similar result as with the sun itself and I found out that there are garments that are as good as "50+ certified" protective clothing (for example nearly all of my trousers and some of my shorts/t-shirts/hoodies don't let any UV rays go through). On the other hand, there are some that are really really bad and let through a lot of UV rays and where they go through, they do so with a lot of power (card turns quite purple in those areas). To be fair I found even so called protective garments that weren't that good either.

What do you think about this? Do you think that even with normal clothing you still get protection? Surely you get some, but is it enough?

I usually put sunscreen even on the palm of my hands and let it dry a bit before touching things so that it's absorbed and might still protect a little, do you think I'm being overcautious?

Thank you again, Richard!

Expand full comment
Richard McKenzie's avatar

Hopefully the next post will help. If you send the first few characters of your email address I’ll reply directly.

Expand full comment