Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A fantastic product...

I used this leather cleaner on my 2001 Avalon, thinking it wouldn't work as well as the other reviewers described. I was wrong. I could see the grime and soaked-in dirt come off before my eyes. The results were simply amazing, especially given that the leather had never been thoroughly cleaned before.Take care to follow the instructions carefully to maximize the effect of the product. Think about using it more than once if the leather is in really bad shape.Follow up the cleaning with the Zymol leather conditioner and you will remove years of neglect off your leather products.