Be very careful if you try to order anything from smilebryte tooth whitening as if you don't order a large enough amount as far as they are concerned or ask any questions about the product you get abusive e-mails back telling you that "you are not a serious buyer & to go forth & urinate!" Yes really that is the response I got back in writing disgraceful hey! So please everyone be careful I'd hate to think what their response will be if you returned the item for any reason!? read full review »