How do you like celebrity y teeth whitener?

I received the product a week and a half ago. It is almost half empty already. No change at all. For $50 plus shipping, what a joke. I leave it on, no drinking or eating, even use it before bed for 8 hours of undisturbed time. NOTHING!! It is just a tiny tiny bottle of hydrogen peroxide plus whatever and has a little stick and sponge at the end. Looks clear when you put it on. Not one shade better! Please don't waste your money like I did.