Uploaded July 2026 | Updated September 2026, 2 weeks ago
Sunscreen sticks seem really convenient and lightweight, but when I tested them 3 years ago, I was pretty shocked. It's really hard to get enough on your skin - most of the time anyway (foreshadowing). But I had a bunch of unanswered questions, and I needed answers, so I did a whole bunch more experiments to get to the bottom of it. Watch me do painful science 🥲
MY BOOK 📖 The Science of Beauty: labmuffin.com/sob
Shop more of my favorite products here: shopmy.us/labmuffin
Subscribe for videos every fortnight: bit.ly/labmuffinyt
0:00 Apology 😭and my old experiments
1:34 "Right amount" to apply?
3:25 More stick/time tests
4:34 Maybe 4 passes could work?
6:12 Skipped spots aka let's review Michelle's mistakes
9:12 Product design trends
10:38 SPF with 4 passes (and lots of graphs)
14:03 8 passes?
14:21 Passes versus time on skin
14:37 Please replicate my experiments!
15:16 Was my first video right?
Article with more experimental info: labmuffin.com/how-to-apply-sunscreen-stick
Powered By Chemicals Mugs: labmuffin.com/shop
🙋🏻 I'm Michelle, a chemistry PhD, cosmetic chemist and science educator, here to explain how beauty products work, debunk myths, and help you make smarter decisions about your skincare, hair and makeup!
Website labmuffin.com
Instagram instagram.com/labmuffinbeautyscience
TikTok tiktok.com/@labmuffinbeautyscience
Threads. threads.net/labmuffinbeautyscience
Shop my favorite products: shopmy.us/labmuffin
✨ Want smooth, glowing skin? Grab a copy of my FREE Essential Guide to Exfoliation! labmuffin.com/exfol
🧴 PRODUCTS (affiliate links)
This is the UV camera I use: aliexpress.com/item/1005009347448808.html
But it looks like there are really cheap ones now, not sure about quality: aliexpress.com/item/1005008660486026.html
Scales amzn.to/4feM4Ol
NEUTROGENA | Ultra Sheer Mineral Face & Body Sunscreen Stick SPF 50+: go.shopmy.us/p-71445316
NAKED SUNDAYS | Clear Glow Face & Body Sun Stick Sunscreen SPF50: go.shopmy.us/p-71445715
BEAUTY OF JOSEON | Matte Sun Stick: go.shopmy.us/p-71444538
TOCOBO | Cotton Soft Sun Stick SPF 50+ PA++++: go.shopmy.us/p-1190160
ABIB | Quick Sunstick Protection Bar SPF 50+ PA++++: go.shopmy.us/p-1190162
BENTON | Mineral Sun Stick SPF 50+ PA++++: go.shopmy.us/p-1190164
SHISEIDO | Clear Sunscreen Stick SPF 50+: go.shopmy.us/p-71444662
CETAPHIL (CETAPHIL.COM) | Sheer Mineral Sunscreen Stick SPF 50: go.shopmy.us/p-71445987
ABIB | Airy Sunstick Smoothing Bar SPF50 PA 23 G: go.shopmy.us/p-71446062
SUPERGOOP! | Glow Stick SPF 50 Sunscreen : go.shopmy.us/p-71446214 (use code: DRWONG for 15% off)
ROUND LAB | Birch Juice Moisturizing UVLock Sun Stick: go.shopmy.us/p-71446294
Shop my favorite products here: shopmy.us/shop/labmuffin
Powered By Chemicals Mugs: labmuffin.com/shop
📺 RELATED POSTS AND VIDEOS
Free exfoliation guide labmuffin.com/exfol
Every sunscreen question answered youtu.be/AyCNQhCVdqs
Do sunscreen sticks work? The science youtu.be/rDZGu68c5sU
Spray sunscreens are worse than we thought youtu.be/vL9ybUpAdu0
Products I refuse to use as a chemist youtu.be/Lb8DkTzFyYI
Debunking Huberman's dodgy skincare science youtu.be/r0xINIwcF0w
Top sunscreen recommendations 2024 youtu.be/p5p72V3Jrg8
Debunking the worst sunscreen misinformation on TikTok 2024 youtu.be/wCPp8EJSG-Y&t
TikTok expert advice youtu.be/0bRpljNL7ro
US sunscreens "aren't safe" in the EU youtu.be/h5Ta6T2DmRQ
Debunking Dr Yvonne Burkart's sunscreen LIES youtu.be/VmNxyhN8ZxI
No TikTok, skincare is not killing you youtu.be/2DVcs9kP97s
The worst TikTok haircare advice youtu.be/NErfR6OW7m8
Zinc sunscreens don't work better youtu.be/4JOWwwEFI8A
Blue light update youtu.be/Rr4p6hC2ewc
Does heat from chemical sunscreens make melasma and pigment worse? youtu.be/iFhzr9DbmWs
Octocrylene and benzophenone in sunscreen youtu.be/o5BPmsPPQBU
🧴 SKINCARE GUIDE 🧴 Find out more: labmuffin.com/skin
Sunscreen sticks seem really convenient and lightweight, but when I tested them 3 years ago, I was pretty shocked. It's really hard to get enough on your skin - most of the time anyway (foreshadowing). But I had a bunch of unanswered questions, and I needed answers, so I did a whole bunch more experiments to get to the bottom of it. Watch me do painful science 🥲
MY BOOK 📖 The Science of Beauty: labmuffin.com/sob
Shop more of my favorite products here: shopmy.us/labmuffin
Subscribe for videos every fortnight: bit.ly/labmuffinyt
0:00 Apology 😭and my old experiments
1:34 "Right amount" to apply?
3:25 More stick/time tests
4:34 Maybe 4 passes could work?
6:12 Skipped spots aka let's review Michelle's mistakes
9:12 Product design trends
10:38 SPF with 4 passes (and lots of graphs)
14:03 8 passes?
14:21 Passes versus time on skin
14:37 Please replicate my experiments!
15:16 Was my first video right?
Article with more experimental info: labmuffin.com/how-to-apply-sunscreen-stick
Powered By Chemicals Mugs: labmuffin.com/shop
🙋🏻 I'm Michelle, a chemistry PhD, cosmetic chemist and science educator, here to explain how beauty products work, debunk myths, and help you make smarter decisions about your skincare, hair and makeup!
Website labmuffin.com
Instagram instagram.com/labmuffinbeautyscience
TikTok tiktok.com/@labmuffinbeautyscience
Threads. threads.net/labmuffinbeautyscience
Shop my favorite products: shopmy.us/labmuffin
✨ Want smooth, glowing skin? Grab a copy of my FREE Essential Guide to Exfoliation! labmuffin.com/exfol
🧴 PRODUCTS (affiliate links)
This is the UV camera I use: aliexpress.com/item/1005009347448808.html
But it looks like there are really cheap ones now, not sure about quality: aliexpress.com/item/1005008660486026.html
Scales amzn.to/4feM4Ol
NEUTROGENA | Ultra Sheer Mineral Face & Body Sunscreen Stick SPF 50+: go.shopmy.us/p-71445316
NAKED SUNDAYS | Clear Glow Face & Body Sun Stick Sunscreen SPF50: go.shopmy.us/p-71445715
BEAUTY OF JOSEON | Matte Sun Stick: go.shopmy.us/p-71444538
TOCOBO | Cotton Soft Sun Stick SPF 50+ PA++++: go.shopmy.us/p-1190160
ABIB | Quick Sunstick Protection Bar SPF 50+ PA++++: go.shopmy.us/p-1190162
BENTON | Mineral Sun Stick SPF 50+ PA++++: go.shopmy.us/p-1190164
SHISEIDO | Clear Sunscreen Stick SPF 50+: go.shopmy.us/p-71444662
CETAPHIL (CETAPHIL.COM) | Sheer Mineral Sunscreen Stick SPF 50: go.shopmy.us/p-71445987
ABIB | Airy Sunstick Smoothing Bar SPF50 PA 23 G: go.shopmy.us/p-71446062
SUPERGOOP! | Glow Stick SPF 50 Sunscreen : go.shopmy.us/p-71446214 (use code: DRWONG for 15% off)
ROUND LAB | Birch Juice Moisturizing UVLock Sun Stick: go.shopmy.us/p-71446294
Shop my favorite products here: shopmy.us/shop/labmuffin
Powered By Chemicals Mugs: labmuffin.com/shop
📺 RELATED POSTS AND VIDEOS
Free exfoliation guide labmuffin.com/exfol
Every sunscreen question answered youtu.be/AyCNQhCVdqs
Do sunscreen sticks work? The science youtu.be/rDZGu68c5sU
Spray sunscreens are worse than we thought youtu.be/vL9ybUpAdu0
Products I refuse to use as a chemist youtu.be/Lb8DkTzFyYI
Debunking Huberman's dodgy skincare science youtu.be/r0xINIwcF0w
Top sunscreen recommendations 2024 youtu.be/p5p72V3Jrg8
Debunking the worst sunscreen misinformation on TikTok 2024 youtu.be/wCPp8EJSG-Y&t
TikTok expert advice youtu.be/0bRpljNL7ro
US sunscreens "aren't safe" in the EU youtu.be/h5Ta6T2DmRQ
Debunking Dr Yvonne Burkart's sunscreen LIES youtu.be/VmNxyhN8ZxI
No TikTok, skincare is not killing you youtu.be/2DVcs9kP97s
The worst TikTok haircare advice youtu.be/NErfR6OW7m8
Zinc sunscreens don't work better youtu.be/4JOWwwEFI8A
Blue light update youtu.be/Rr4p6hC2ewc
Does heat from chemical sunscreens make melasma and pigment worse? youtu.be/iFhzr9DbmWs
Octocrylene and benzophenone in sunscreen youtu.be/o5BPmsPPQBU
🧴 SKINCARE GUIDE 🧴 Find out more: labmuffin.com/skin
