Instruct: Classify the given review as either positive or negative.
Query: I can't believe it!!!!!!

I can't believe that I found a product that works, and works beyond anything I would have expected. My niece brought the product and after a month she raved to me about it and how long and thick her hair grew. I am black with nutty short hair. Both my niece and I wear hair weaves. I bought the product, used just the shampoo and conditioner once a week for two months and when I took my hair weave out after these two months, my hair is a lot longer and thicker. My short hair is down to my neck. I really don't need a hair weave anymore!!! Now I'm thinking of putting my hair back into the hair weave for another two months and take the vitamins as well. This is no joke, this product really, really works!!! I am sooooo amazed at my results!!!!