Instruct: Classify a given review into positive or negative sentiment.
Query: it actually works

I've tried just about everything to stop my nail biting habit. My mother even threatened to put gloves on me that I would have to wear 24/7. I'm 27 now, and hopefully am out of the habit without relapse. This product works since it's a bitter reminder that I'm biting my nails. The only pit fall is that finger foods (ie fruit, chips) also taste bitter.