I tried this product and it didn't work on my teeth because the gel wouldn't stay on my teeth it would wash off on the inside of my lips. I tried for almost two weeks and I saw no results. I wouldn't recommend this product look for something that you don't just pen on your teeth.
This product is amazing. I have always wanted my teeth to be whiter, but could not spend the money. I noticed a difference after the first use! It boosted my confidence tremendously. I would highly recommend this. It works magic, I swear!