Instruct: Classify Amazon reviews into positive or negative sentiment
Query: let down

pro: love love love the smell, it transported me to a tropical oasiscon: I'm glad to see from the other reviews that I'm not the only one who experienced this, thought I was going crazy, it had such potential with all the ingredients that it claims to be in it, my hair was hopeful, but was immediatley let down. I was left with dry brittle, frizzy hair, I tried using a little more, and it just left alot of build up in my hair even with my clarifying shampoo. Its too bad, they need to do some re-formulating