Skincare actives: How sunscreen really works

Types of Sunscreen

CHEMICAL SUNSCREEN

They contain active ingredients in chemical sunscreens that absorb UV rays as they hit the skin.

PHYSICAL SUNSCREEN

These have ingredients (commonly zinc oxide and titanium dioxide) to physically reflect sunlight.

HYBRID SUNSCREEN means it's mixed between chemical and physical sunscreen.

Geniuses -- make sure you use sunscreen that's above SPF 30 in order to block both UV rays!

Now... here is how to apply sunscreen properly:

1. Apply at least every 2-3 hours for it to function properly.

2. Waterproof sunscreen is false; make sure you reapply if you went into water.

3. Apply at least the amount of a quarter coin. Too little sunscreen does nothing to blocking the sun.