I started using biomin as I noticed the enamel was eroding on my front tooth as it was darker at the ends and was also experiencing sensitivity. I have definitely felt an improvement with my sensitivity issues and I am also starting to notice the dark patch lighting on my front tooth. I am really happy with this result! It also tastes great, which is important as you don’t swish water in your mouth after brushing and am left feeling fresh for a long time, I will continue purchasing BioMin! Bec