I had a really bad coffee stain on my front teeth. Had tried the crest ones for a while but they weren’t helping. My hygienist did some treatment and told me it’ll probably come back because of the texture of my teeth, but told me to use the crest ones a few days ahead of a special event if I wanted a touchup. Stain came back.

Went to the dentist for an unrelated issue and my dentist noticed the stain, literally filed down my tooth in like 2 seconds and for free, and the stain has never come back again, lol.

Yeah. They gave me sensitive teeth. It works by getting rid of the top layer of your teeth. Avoid.

crest whitening strips absolutely work, and you shouldn’t use the whole box at once, wait a few months. that drastic of a change is obvious and can make your teeth super sensitive. but they absolutely worked for me. the difference between each one is how many come in the box and how concentrated they are. the 3D white strips I feel are the best balance and price value.

My hygienist told me to just use OTC instead of trying to do it at the dentist’s office. She didn’t suggest a specific brand though.

I got best results having my dentist make me a mold ($70) and using Amazon whitening tubes.