Instruct: Classify a given review as either positive or negative.
Query: Shampoo

I have been using this shampoo for years and love it. I have tried many different brands and have always gone back to using Kerastase. I have very curly hair and find that this is the only product that keeps my hair manageable. Very few salons in my area sell this, however it costs 2x the amount I paid on Amazon.