No difference I do not smoke but I drink coffee. I do not see any difference using this product.

I like the "taste" of this toothpaste; however I haven't noticed its whitening effects. A dental assistant has told me to smear it over my teeth and let it sit for 3-5 minutes before rinsing... she claims that it works for her. I haven't tried that yet as I have somewhat sensitive teeth. But one of these days maybe I'll give it a try.

I can't use this on a regularly basis as I have sensitive teeth. I don't mind the taste. Since I can't use it every day can't really tell about the whitening part. Check out my U tube channel, ravercat4

Really great toothpaste.really works for family to whiten their teeth gradually.

I got the Colgate Optic White toothpaste in sparkling mint. The paste claims to whiten your teeth by 3 shades. I have used it for a week and I can definitely see a difference...3 shades? I'm not sure. I like the cool minty flavor and I didn't find it to be too gritty like some other whitening pastes. So I'd give this two fangs up!

This product works! After a few days you can really start to see a difference. The only part I don't prefer is the taste of the hydrogen peroxide but I think that is what makes it work so well so I will deal with it.

I like this toothpaste but it seems to have replaced the Colgate Pro-Clinical line which I liked better, specifically the pro-whitening.

This product works.....I've noticed my teeth are whiter. This is the only toothpaste my daughter uses.

Good This is like any other whitening toothpaste but it works well

The only toothpaste my husband will let us buy. He claims they alleviate his canker sores in his mouth. I'm not a believer but I do love the product!

This actually works! With one use I could tell the difference. There is a point where it will top out though, your teeth will only get so white, but it works great.

Love this product! Makes my teeth feel really clean. Great for whitening my teeth!

I received the optic white system complimentary from Influenster and I am glad I had the opportunity. This is amazing and made my mouth feel clean and refreshed, I also noticed a difference in the whiteness of my teeth. Will be buying more of this in the future.

This toothpaste does a great job cleaning my teeth. I do think it helps get your teeth whiter after a couple weeks of regular use.

I really like this, I like that it is a bit gritty, and I feel that it really cleans my teeth. I only use it once per day and a regular toothpaste the other time though, to save money and to not be too harsh on my teeth.