Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Crusty mess

This hair gel has very little going for it. Here is my reviewPros:Smells niceCons:Very light hold, almost non-existentIt turns into a hard crust! This hair gel dried into a crunchy mess on my head half an hour after application. The crust comes off and flakes.Some products from this company are amazing, but this one missed the mark, badly.