Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Doesnt work

All this product does is slowly ""paint"" your hair, but it washes right out when you wash your hair. Anotherwords, your hair only stays lightly colored(not even fully) till you wash your hair. To me, it seems like it colors your scalp more than the actual grey hairs.A waste of money. A complete rip off.