amazing. works so so good. also make your teeth very sensitive so be careful. literally makes your teeth so white you will be shook

I use the these every time I go in vacation. They work really good. I would definitely recommend this.

Whitest teeth by far better than any dental trays you can have made- well worth the money and then some

I have hardly seen a difference in the color of my teeth and this has left my teeth feeling so sensitive! Would not recommend!

Works great but made my teeth very sensitive for a day which is normal for me. Sadly I haven't found very many products that don't make me sensitive

Loved these whitening strips I saw results right away took away my stains and helped prevent new one

Love how white it gets my teeth & doesn't make them super sensitive along the way. They are also so quick and easy.

I have used these for years and only every few weeks or sometimes months and I get compliments on my teeth all the time. They work!

I've been using Crest 3D White Whitestrips Professional Effects for approx three weeks and can see a TREMENDOUS change. AWESOME STUFF!!!

They work well but my teeth are so sensitive for at least a day if not more after I use them. Worth it though!