For the last 14 days I’ve been whitening my teeth using Mr. Blanc teeth whitening strips. I love that this is a peroxide free gel formula that doesn’t leave my teeth feeling sensitive after using them. The strips are really gentle on tooth enamel but are still really effective. It’s so hard to capture a good before and after photo, but I would say my teeth are definitely whiter than they were before using them. After one more box of a two week supply I think I would get to my desired level of white. I have used other whitening strips that are fast and effective but always leave my teeth feeling striped and sensitive. That was definitely not the case with Mr. Blanc! I would highly recommend using these whitening strips especially if you have sensitive teeth. You’ll be happy with the results!