Ton rétinol est-il vraiment efficace ? (ce qu'on ne te dit pas)

#retinol #skincare #cosmetics More than half of retinol products lose more than half their effectiveness before you even finish the bottle. And The Ordinary's chief scientist admitted that their retinols last 3 months. In the fridge. How long has your serum been sitting in your bathroom? In this video, I break down: ✅ Why the retinol in your serum isn't natural ✅ The scientific study that measured what's REALLY left in the bottles ✅ The Ordinary's chief scientist's confession ✅ The 4 criteria I check as a formulator (encapsulation, stabilizers, vehicle, packaging) ✅ My Paula's Choice soon to be banned + the new EU regulations 🔬 SCIENTIFIC SOURCES: Temova Rakuša et al. (2021), "Retinoid stability and degradation kinetics in commercial cosmetic products", Journal of Cosmetic Dermatology, 20:2350–2358 (DOI: 10.1111/jocd.13852) Interview Lab Muffin Beauty Science × Prudvi Kaka (CSO Deciem), 2020 Regulation (EU) 2024/996, retinol restriction 0.3% max 📌 TIMESTAMPS: 00:00 - Intro 00:57 - My angle as a formulator 01:37 - Retinol is NOT natural 03:13 - The study that changes everything 04:25 - The Ordinary's confession 05:03 - The 4 stability factors 07:33 - The retinoid family 08:25 - My Paula's Choice is going to be banned 11:30 - Recap Your checklist and what's coming up 💬 TELL ME IN THE COMMENTS: Have you ever used retinol? Where do you keep it? 🧊 Fridge or 🚿 bathroom? 👉 SUBSCRIBE for honest cosmetic reviews every week! 🔥 NEXT WEEK: I'm analyzing over 20 retinol products and telling you which ones to buy (and which ones to avoid). 😊 📺 MY RELATED VIDEOS: Understanding Retinol:    • TOUT sur le Rétinol : Comment l’utiliser ?...   --- 🌐 FIND ME: Instagram: @cosmady TikTok: @cosmady Email: [email protected] 🎨 THUMBNAIL BY: @yelocut Instagram: https://www.instagram.com/yelocut/?__d=1 Portfolio: https://www.yelocut.com/ #retinol #vitaminA #skincare #cosmetics #theordinary #paulaschoice #retinal #SVR #frenchskincare #skincareroutines #cosmeticingredients #formulator #cosmeticscience #antiaging #retinoid #beautyscience