Sunscreen stick update, sunscreen mythbusting, K-beauty finds
August update.
Hope you’re all doing well! I’ve been hard at work on a couple of big projects that I’ll be able to share more about soon - stay tuned!
Shorter content
Posts on Instagram, TikTok and YouTube Shorts:
Doctor Myro reposted his anti-chemical sunscreen post, so I reposted my response to it as well - he’s blocked me now, but our conversation the first time around is in this YouTube video
A couple of clips from my podcast appearance on Call Your Doctor, talking about clean beauty and the truth about endocrine disruptors in beauty products
Dermatology resident Dr Ciaran Smythe makes a bunch of crap arguments about whether diaper cream works - Part 1 and Part 2
Sunscreen doesn’t work - debunking Jitendra Chouksey of Fittr’s video
Skin cancer surgeon Dr Teo Soleymani says a lot of daft stuff about sunscreen safety (I’ve critiqued his Huberman podcast episode before)
A summary of my collaboration with Katelyn Jetelina about sunscreen
CeraVe doesn’t cause cancer - in both video and infographic form
More sunscreen debunking (sorry it’s sunscreen misinfo season)
How the “PFAS in Driscoll’s strawberries” story is linked to reef safe misinfo
I was (kinda) wrong about sunscreen sticks
I did a bunch of new experiments on sunscreen sticks, and found a few that actually apply easily enough that they give reasonable protection! I still don’t think they’re a good option compared to lotions, but there are some situations where I think they’re reasonable.
You can watch this on YouTube and Nebula.
Debunking this year’s top sunscreen myths
Every year there’s brand new sunscreen misinformation - here’s a compilation of some of the 2026 bumper crop!
You can watch this on YouTube and Nebula.
New K-Beauty finds: PDRN, TECA, lip tint
This is sponsored by Stylevana - I talk about some Korean beauty products I’ve really enjoyed lately. Mostly skincare, but also really lovely lip tint and a shampoo! You can watch it here.
Happy nerding - talk soon!





Sunscreen sticks are good for kids - you can easily apply the zinc ones without a mirror, so I send them to camp for reapplying under the eyes / on the nose.