Review on 😁 Crest 3D White Professional Effects Whitestrips: Advanced Teeth Whitening Kit by Brent Doolan

Just spent 20 days wearing white stripes every night. I've worn them for longer than the package says (45 minutes to an hour, not 30 minutes) and the results are fine. It was a lot cheaper than having them whitened at the dentist but I feel like the gel couldn't get between my teeth to whiten the sides of my teeth. In the picture I've attached you can see what I mean. My teeth have definitely gotten whiter, but there is still some yellow between the teeth. Note that I only had a professional "deep cleaning" of my teeth a week before using the white strips, so I'm not sure if that makes a difference. I brush, floss, and rinse my mouth every morning and night since I went to the dentist and started using these strips.