Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't really work

I used this shampoo for years in hopes of lightening my dark blonde hair. When they discontinued it I thought maybe my life would be over and I should go shave my head or chop it off or something. Instead I bought a bunch off of Amazon. What I soon realized was that it had been drying out my hair like crazy and the conditioner for it sucked as well. I've since switched to Herbal Essences and am quite happy.