The Crest Professional Whitening With LIGHT brings about results very quickly after using them only once or twice. My teeth were much brighter and had people asking what I was doing different.

After just one use my smile is soo white and bright. It doesn't slip while using which is very useful. It does though make my teeth a little sensitive.

Great for getting your teeth there whitest with minimal effort. My teeth are not too stained but these always take me back to paper white! Could be longer because they don't cover all your teeth just the ones that show in the front.

When I feel like my teeth that need a little extra love and are looking to doll I love using the crest 3-D white strips. They are a bit on the pricey side but they do work very effectively on whitening my teeth after just one use

These are the literal best. I apply them a couple days a week for 3 weeks and then take a break. I get compliments on my teeth and their whiteness. They fs are effective.

Crest Whitestrips are the best over the counter whitening agents available, hands down. I don't know why there are so many different variations (professional, luxe, etc.), they all seem to work the same, just with different price tags.

These really work. Dramatically. I used these 3x a week for 3 weeks before my prom and my teeth were beautiful for pictures. However, if you have insanely sensitive teeth like me, these hurt a lot. It was worth it.

I like using these to get my teeth white. I can't use them all the time because I have a few broken teeth and when I put these strips on, it makes my nerve endings hurt. I usually use it about twice a year. 

I'm only giving this product 4 stars because my teeth were really sensitive after using these strips. If you have sensitive teeth, I recommend taking longer breaks in between treatments to prevent discomfort but showed great results.

Love these! The only con I would have is that I never finish the pack for 2 reasons. The 1st is that my teeth get a little sensitive but the 2nd is that my teeth are so white I don't need them! Would highly recommend to anyone