Introduction: Think sunscreen is only for beach days? Think again. It’s the single most important step in your skincare routine — all year round. Main Points: • Why sunscreen matters: Protects against UV damage, premature aging, skin cancer • Types: o Physical (mineral): Zinc oxide, titanium dioxide o Chemical: Absorbs UV rays • SPF Explained: What it means and how to choose • How to apply it correctly: Amount, reapplication, and layering with makeup Conclusion: If you do just one thing for your skin — wear sunscreen. It’s the best anti-aging product you’ll ever use.