I’ve been using Crest White Strips for about a week now. I should restate that. I’ve successfully completed approximately 7 days (2x per day) of the Crest White Strip regimen. They were not all back-to-back, however. I notice that I’ve had a headache on most every day that I’ve used them. Correlation? Maybe. I believe it is because of a very sensitive tooth that I have on the left side of my mouth. Possibly.
I do notice a difference in my teeth. Not dramatic, but definitely a bit brighter.
I have no trouble getting the strips on my teeth, as some reviews I’ve read. I did have one strip that left the gel behind and was rendered useless. Also, when I have the strips in my mouth, I spit. I don’t swallow my saliva for a half hour. Maybe it is weird, but I really don’t want that gunk in my tummy, just as I don’t want toothpaste or mouthwash in there either. I don’t need a whitened tummy.