I actually thought these worked very well! In the past, I thought the Whitestrips were a bit bulky in my mouth, and would slide around. These didn't budge and actually covered a little more teeth than the previous strips I've used.
There was a noticeable difference in my teeth, before and after. No pictures, because that's just gross (and nobody wants to see a closeup of my teeth!), but my teeth looked brighter. Nothing life changing, but because I could see the difference with my eyes, I was happy!
I didn't get any sensitivity when the strips were on, but my teeth were a bit sensitive for a couple days after. Nothing major - I barely noticed it, but it's worth mentioning, especially if your teeth are already prone to sensitivity.
I highly recommend these if you have an event or special event, your teeth are already white enough for your liking, but you'd more of a sparkle in them. If you'd like to go further with your teeth whitening journey, Crest Whitestips have a lot of other options to choose from!
*Disclosure: I am a #BeautyUnited blogger. As part of my affiliation with this group I receive products and special access to P&G events. The opinions on this blog are my own.