So basically a bad depressive episode caused me to neglect my teeth and then endless amounts of coffee didn't help. After working myself out of it and finally taking care of myself, I still couldn't smile with my teeth. I was self-conscious. I thought about getting them professionally whitened but opted to try this. BOY. I saw results by the third day like the box said I would. By the fourth day, I could almost cry. I'm not done with my 20 treatments yet but this has seriously changed everything. It makes me so happy. I can't believe I could have just done this the whole time. Thank you crest, for this lovely product and giving me my smile back.

I used to love these whitestrips when they were in the purple box with the Luxe line. They were my go-to and I always noticed a difference within a couple of days after I wore them. These new packaged ones are garbage and do absolutely nothing. So disappointed.

These strips BURN your gums and make your teeth super sensitive and sting. I have used other whitening strips and these by far make my teeth hurt the most. I also have used these forever and they make little to no improvements on the whiteness of my teeth.

My teeth would be much more yellow if I didn't use this because I drink coffee daily as well as tea and wine. These can definitely make your teeth sensitive though so I use these only when I notice my teeth are trailing behind where I like them to be in terms of whiteness.

Like many of the other reviews stated, mine came in a plain brown cardboard box with NO INSTRUCTIONS. I've used Crest Whitestrips before and the individual packaging of the strips looks legit. After checking the Crest website, they show the same brown box container so I'm gonna try them and see.

I use crest 3D whitestrips. Have used the crest whitening strips for many years. I had my teeth professionally whitened years back, but that fades over time. I keep them nice & white with these strips. I've tried other brands, but they are a waste of money. Crest is the best!

This product does what it says it will do. Whitens my teeth and doesnt leave them feeling overly sensitive. I usually whiten once every six months to keep up with the color. If you want a cheaper alternative, go with target's up and up brand. Works just as well for a cheaper price tag.

Use these a couple times a year to refresh my smile. They work just as good as professional whitening in my opinion! My teeth get a tiny bit sensitive but nothing that causes discomfort. They fit right into my teeth and make my smile noticeably whiter!

Even thought it is very bad for your teeth this product is my guilty pleasure. I use it about once a week if I need it. But I bought it a couple of times and was never disappointed. I definitely recommend it works very well and whitens after 2 or 3 times. Crest 3D White Luxe Professional Effects Whitestrips Teeth Whitening Kit

Ow. I didn't think I had sensitive teeth until I used this. Honestly, my teeth have never been the same. I feel like any whitening I try hurts now which kinda sucks. I didn't even finish the entire box because my teeth hurt so bad, so I never noticed if they made much of a difference. Oh well.