Instruct: Classify the given review into positive or negative sentiment.
Query: Makes hair fall out!

Based on the reviews that MTG will help mane and tail hair grow, I decided to try it on my horse. I used it twice as directed, with 1 1/2 weeks between applications. 3 weeks after the first application all the hair under my horse's mane, tail, and forelock was GONE!! I don't know how they can advertise for a product that grows hair when in fact it causes it to fall out! He looks horrible!