I was wrong about sunscreen sticks

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: https://labmuffin.com/sob Shop more of my favorite products here: https://shopmy.us/labmuffin Subscribe for videos every fortnight: http://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: https://labmuffin.com/how-to-apply-sunscreen-stick/ Powered By Chemicals Mugs: https://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 https://labmuffin.com Instagram https://instagram.com/labmuffinbeautyscience TikTok https://www.tiktok.com/@labmuffinbeautyscience Threads. https://threads.net/labmuffinbeautyscience Shop my favori