Review (5/5): Just excellent toothpaste (from a toothpaste snob)
I am a toothpaste snob and have always bought the best such as Rembrandt, Mentadent, or Crest 3D because good toothpaste (including a Sonicare toothbrush) is so much better/cheaper than dental work.
The Optic White looks unimpressive as just a plain white paste. No stripes, twin tubes, sparkles, or any flavor-bursting crystals or strips. I was not expecting much, but after using it, I am so impressed with this that this will become my new toothpaste. It has a lot of silica in it, so it feels more abrasive than others, but it does the trick (along with some nominal amounts of hydrogen peroxide) to actually whiten my teeth as good or better than any other toothpaste I've used.
It also comes with a relatively high amount of fluoride at 0.76%. This is compared to the Crest 3D at 0.243% (or triple) while the Crest Pro Health lists 0.454%.
Additionally, I've found with a lot of toothpastes such as Crest Pro Health that they contain some kind of ingredient (one of the gingivitis or plaque chemicals) that tends to dissolve my mouth. With those other toothpastes, I get an annoying slough-off of a layer of mouth skin. I asked my dentist, and she said it is one of the chemicals and likely an irritant to my gums. Well, this Colgate Optic White does not have that ingredient yet cleans my teeth really well. I'm sure that Colgate has done their homework, but it is too early to tell if the additional silica will result in increased enamel wear.
Another note about Sparkling Mint is that it is really a bright mint flavor. Your mouth will feel really sparkling and cool which I kind of like, but some may find the flavor too strong.
I would highly recommend this toothpaste.