It's a sunscreen, not a block, so it won't prevent tanning totally. I'm med to light tone, and it allows me to protect, and still get some change in hue. So I'd only use zinc oxide if I wanted no color. I use a lot of products that increase photo sensitivity and this protects well against making things far worse!
answered 2 months, 2 weeks ago
Wearing sunscreen and avoiding sun exposure is the best way to prevent sun burns/sun tans. When in the sun for long periods of time, please remember to reapply your sunscreen.