Peel open that strip, and you’ll find a slimy, clear gel stuck to the plastic. That goo is the real hero here, and its name is hydrogen peroxide (or sometimes carbamide peroxide). Think of it as a really polite but persistent bleach that only wants to hang out with your enamel.
When you slap that strip onto your teeth, the peroxide gets to work. It doesn’t scrub or scrape; instead, it dives deep into the tiny pores of your enamel. It’s like a tiny, ghostly plumber that goes in and breaks up the big, ugly stain molecules into tiny, invisible pieces.
This is why scrapping them off with your fingernail doesn’t do anything—the magic happens inside the tooth, not on the surface. You’re basically giving your teeth a deep chemical cleanse, not a bath.
