Crest 3D Whitestrips, Supreme Flexfit, Teeth Whitening Strip Kit, 42 Strips (21 Treatments)

These are without a doubt the most whitening/brightening whitestrips I've ever used. The strips are so uniform and the whitening ingredients are so well spread onto the strips it's crystal clear.I've been using crest whitestrips for 14-15 years now. I started all the way back before the non-slip was even invented and you'd have to just kinda bite down on your teeth to prevent them from sliding around. They've been VERY effective in the past, which is why I've continued to use them throughout the years, but this pack right here is the most effective one I've ever used. I'm only halfway done with the set but my teeth are OUTLANDISHLY white. I started getting compliments from coworkers my 3rd day in. I did some research after buying them because I wanted to know what made these different, and it turns out it has the highest hydrogen peroxide concentration from all other strips out there. Their other strips contain 3.5%, 8% etc, this one's supplying the highest concentration you can get. I will say, if you're new to whitestrips they work by oxidizing the surface of the tooth to remove the stains soaked into the teeth. It's enamal safe, but you'll notice sensitivity. By day 5 I had to go out and get some sensodyne . If you're having sensitivity issues, I recommend getting sensydne and when you go to brush your teeth, spit out the toothpaste, not rinse. When you go to bed, brush softly and spit out the toothpaste, go right to bed and the floride toothpaste will help stick to your teeth and stop that sensitivity.

Works great

Wow! Worked even from day 1, effective whitening.

Worked well lasted a short while.

I cannot tell you how many times people (and my dentist) tell me how white my teeth are. This works!

This is my 5th time purchasing crest product and the individual whitening packages are not marked with the level of whiteness. All the packages from the 20-25 look the same. What is going on? The box says the level, but again, since December there has not be a label on the packet themselves. Am I paying more for the same strips?

It's excellent!

These really do whiten your teeth. It’s definitely noticeable. Some of the strips are a bit difficult to pull off of the plastic backing, but it’s worth it in the end. I highly recommend this product.