Dissolving White Strips

I have a cupon for $ 10 rebate and that I would get crest white strips that I know work, but I would put $ 15. Saving money does not mean shit if they do not work, so I ask. Thank you

It works to a certain extent ...

I think Crest White Strips work better, but many of the ingredients are similar in most bleaching products. It can not hurt to try.