Do zinc sunscreens stop working and go toxic after 2 hours?
There’s a new paper on zinc oxide sunscreens not working and becoming toxic after 2 hours of UV exposure. A lot of people have sent me this paper, so here’s …
analysis
Ultimate Vitamin C Skincare Guide Part 1: Ascorbic Acid (with video)
Vitamin C is one of the most commonly raved about ingredients in skincare, with lots of evidence to back up its effects. But it’s also one of the most confusing. …
Do Hats and Umbrellas Protect Well From the Sun? (with video)
Instead of talking about sunscreen like I usually do, we’re going to dive into some of the things you can use to protect your skin apart from sunscreen (I can feel …
How much UV does a REAL mineral sunscreen absorb and scatter?
Warning: Very nerdy content ahead! If you’ve been following sunscreen discourse (apparently this is a thing now) you’ll know that mineral sunscreens mostly work by absorbing UV and only scattering a …
The “60% of products absorb into your bloodstream” myth (with video)
The myth that “60% of what’s applied to your skin is absorbed into your bloodstream” is one of my pet peeves. It’s so far from the truth, and it’s cited …
Do They Work? Evy 6-Hour Sunscreen, Dermablend Drops in SPF
Being the “sunscreen nerd” person, I get a lot of questions about unusual sunscreen products and whether or not their claims work out. Last time I talked about the Colorescience …
Sneaky Marketing? The Inkey List Succinic Acid Acne Treatment
The Inkey List are a brand that I generally quite like (well not anymore, now that I’ve seen their response to me raising this issue, and some of their other …
Should you avoid aluminium in deodorants? The science (with video)
I’ve recently been approached by several natural deodorant companies to talk about the health risks of aluminium-containing antiperspirants. As much as I’d like that sweet sweet cheque… I can’t. Because …