Dr Michelle Wong - Lab Muffin Beauty Science

Dr Michelle Wong - Lab Muffin Beauty Science

@labmuffin.com

#SciComm and educator, medicinal/supramolecular/synthetic chem PhD, cosmetic chemist, YouTuber I explain the science behind beauty products and debunk misinformation. I talk a lot about sunscreen and "toxic" ingredients 🌞 labmuffin.com/links

4.3K followers461 following445 posts

Here’s why AI chatbots (Claude, ChatGPT, Gemini etc) are unreliable for science content, and terrible as “just a starting point” for science communicators. Unfortunately, this probably isn’t something AI chatbots get much better at… although sloppers will get better at hiding it!

Thanks so much to Dr @jordanbharrod for helping me with this 😊 This is adapted from my YT video on AI slop scicomm, which she also helped me with! Her work is an excellent resource for understanding AI hype. Will post a proper article version of this soon!

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

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I recently spoke at the Science Misinfo Symposium - later, some social media researchers told me they weren't aware of some conventions mentioned in my talk. IMO low-hanging fruit for getting better data about social media would be to get input from content creators - many would be happy to help!

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

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Perceived institutional endorsement is IME very important for the spread and impact of sunscreen misinfo - authority bias is powerful! I've seen many people cite intros of peer-reviewed papers as "gold-standard science". "Minerals reflect" is the origin of many sticky myths repeated by derms.

IME, sunscreen misinfo is often underestimated because most people believe some of it, including many experts (dermatologists, chemists…). Sunscreen science is interdisciplinary - it's difficult to spot. I rarely see an article about sunscreen misinfo that doesn't contain some.

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

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So while IMO sunscreen misinformation probably does get more engagement, I don't think this data is good evidence for it. I think it's just finding that clearly disclosed paid advertising gets less engagement than the organic content people came to the platform to see. Not exactly surprising!

SUNSCREEN MISINFO IN PAPER INTRO * Benzene contamination was not a real health concern, even for recalled products * Mineral sunscreens don't work differently to chemical sunscreens * Diligent sunscreen use can reduce vitamin D As the paper states, a myth seen repeatedly feels true.

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

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I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

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CLAIM 2 "Health misinformation about sunscreen attracts disproportionately high audience engagement" I categorised the top 44 videos in the dataset (representing 40% of views in the analysis). Of these, only 7-15 were likely unboosted. You can see the huge difference in engagement!

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

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Sure, boosted videos technically got lots of views… but are they really part of the platform's "dominant narrative"? Would the "dominant narrative" on YouTube be supportive of BetterHelp, or NordVPN, or KFC, or whatever ads you get in your region? I personally don't think so.

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

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e.g. Here's some of my own data Average watch time: Boosted sponsored post = 1.4 & 3.6 sec Unboosted sponsored post = 8.2 & 11.3 sec Unboosted organic content = 14.9 to 30.2 sec Views per like/comment indicate views needed to "earn" an interaction - a measure of engagement.

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

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Brands often boost videos they paid creators to make (ads), plus their own posts. I didn't realise this was an issue until I saw the SI… Of the top 10 videos in their dataset: 6 = clearly disclosed ads 2 = posts from brands 1 = likely undisclosed ad Only 1 was likely organic (regular) content.

i.e. 8 or 9 out of the top 10 posts were boosted. This is because only the top video from each creator was included in the analysis. It's almost impossible for a creator's top video to be a clearly disclosed ad without boosting. Sponsored posts almost always get low engagement and low reach.

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

View full thread

ISSUE 2 This is more subtle - I'd guess only TikTok creators who do sponsorships are really aware of it: The view count used in the study included boosted views. "Boosting" is when a brand pays $$$ for a video to get more views from a target audience (location, age, gender, interests etc).

I've probably been the top sunscreen mythbuster online for the last decade, so I have thoughts! It's super cool that sunscreen misinfo is being formally studied! Big props to the authors for recognising this problem. But there's misinfo in the paper, and IMO the main claims aren't well-supported…

Timothy Caulfield@caulfieldtim.bsky.social

📣 Our NEW study 👇 Sunscreen is overwhelmingly promoted on TikTok, but content with #misinformation exhibits proportionally high levels of audience interaction dx.plos.org/10.1371/jour... by @marcozenone.bsky.social @cherylepeters.bsky.social et al. 🙏 #Cancer #Sunscreen

CLAIM 1 "Overall, the dominant narrative on TikTok promotes sunscreen use" "Our findings indicate that [sunscreen misinformation] constitutes a small portion of the most viewed videos" They estimate only 1.5% of highly viewed sunscreen TikToks state it causes harm.

I don't think 1.5% passes a sniff test for what's seen on TikTok. Quick example: CBC News showed this TikTok screenshot when they covered this study… 3 out of the 4 top videos that came up when searching "sunscreen" suggest chemical sunscreens are toxic - pretty far from 1.5%.

Timothy Caulfield@caulfieldtim.bsky.social

📣 My quick take on our new study on #sunscreen misinformation. Sum: the bunk gets lots of engagement! How reliable is social media for sunscreen information? www.cbc.ca/player/play/... cc @cancersociety.bsky.social @srmarcon.bsky.social @marcozenone.bsky.social @ualberta.bsky.social

A lot of chemical #sunscreen fear is from animal/in vitro studies taken out of context, without comparing exposure in those studies to the actual amounts we're exposed to from sunscreens. Safety limits have massive buffers (100-fold margin of safety, from eg. no observed adverse effect level).

It's also important to consider the downsides of the alternatives - mineral sunscreens have a lot of drawbacks, very few people end up being able to use them regularly (if you genuinely prefer mineral sunscreens that's fine, just watch out for separation and adequate application!)

The best sunscreen is the one you can use a lot of, regularly - and don't forget to use sunscreen in conjunction with protective clothing, hats, shade and sunglasses when the UV index is set to hit 3 or over 😎 You can see my discussion with Dr Myro in the comments on his IG post.

It's ironic that this article perpetuates fear about chemical sunscreens being unsafe. Plus the misconception that dermatologists are experts on product safety (that's toxicologists and safety assessors). Also the US blanket recommendation on sunscreen use that's not actually based on evidence...

Dear science communicators and scientists, Can we please be mindful of how we frame our videos? The vast majority of companies that employ hundreds/thousands of scientists are NOT lying about things you can easily test with household items. Views shouldn’t be the only metric we care about.

Wow it's almost like harm reduction works, like I was taught in both my pharmacology and criminal law classes back in 2006... who woulda thunk it

Rick Morton@squigglyrick.bsky.social

The curious case of the disappearing smoking data. The Roy Morgan release was unequivocal: smoking rates among young adults are up after vaping ban which had "demonstrably failed". And then it disappeared and was replaced with something more amenable. www.thesaturdaypaper.com.au/news/health/...

Seeing a lot of people recommending sunscreen mists... unfortunately they're really not that effective for applying to your face, sorry! See the cloud lingering in the air? That's sunscreen NOT going on your skin - my experiments estimated that 80-95% of the sunscreen doesn't land.