The product is not pleasant to use and my teeth have gone from slightly tan to brown. I’ve also had some aching in a couple of teeth. My lawyer friend says they should pay to get my teeth cleaned and fixed as well as damages for time and usage problems. It is very expensive for what it is...Can’t imagine how little that jar of material cost to make and how much they charge for it...Ridiculous?
Bottom Line: No, I would not recommend this to a friend