Instruct: Classify the given review as either positive or negative.
Query: Didn't work on me

I bought this the summer of 2007 when i was interning and had spare cash. Figured it'd be worth the investment BEEEEEEEEEEEP. yeah total waste of money. I used it regularly (3 times a week) for over 5 months straight and noticed not even the slightest bit of difference. I continued using it once a week after that but am yet to see any results. I still have it lying somewhere. The only reason i gave it 2 stars instead of 1 is because it didn't burn my scalp or cause my hair to fall out or smth :)