To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
After about a week I actually notice a difference in the whiteness of my smile. Will continue to use for a month and update. I do notice though that rinsing with cold water after 2 mins of this stuff in my mouth really sharpens up the temporary sensitivity.
I took the "7 day whiter smile" and it's been 10 days and first day, this tasted horrible, very chemical taste. 2nd day I noticed my teeth looked more yellow, and me thinking it would make it white after 7 days. I was wrong! I should have listen to the other reviewer also claiming it made their teeth yellow. I'm also using the the toothpaste version of this brilliance and glamorious white. I felt my teeth were getting white before I started using this mouthwash! Avoid this mouthwash, bad taste and will NOT make your teeth white, it will turn them yellow!
Tried this for a full week twice a day morning and evening. There was no sign of whitening capabilities. The flavour is decent and gets quite strong. I also lost my sense of taste after using for 3 days.