This stuff is complete garbage!! it doesn’t work whatsoever, it taste like the worst toothpaste ever made, your teeth do not get whiter it just stains, your mouth purple, and, like everyone else is complaining about the shipping time was outrageously long and he will never ever get a reply back through email if you want your money back, I promise! If you ordered off the app Shop, it seems to be a scam half the time! Over priced terrible products on that app!