What is the difference between a physical (mineral) sunscreen and a chemical sunscreen?
The difference between a physical (mineral) sunscreen and a chemical sunscreen comes down to their active ingredients, how they interact with your skin, and how they defend you against UV light. 1. Physical (Mineral) Sunscreen: The Surface Shield Physical sunscreens act like a protective shield or a tiny layer of mirrors resting on top of your face. How it Works: It sits entirely on the surface of your skin to bounce, reflect, and scatter UV rays away before they can enter your body. Active Ingredients: There are only two mineral filters in existence: Zinc Oxide and Titanium Dioxide . Activation Time: Immediate. Because it creates a physical wall, it protects your skin the exact second you apply it. The Finish (The "White Cast"): Because zinc and titanium are naturally opaque, white minerals, these formulas can be thick and sometimes leave a chalky, white, or grayish film on the skin—especially on medium to deep skin tones. (Note: Tinted mineral sunscreens us...