I bought this. not form Amazon but from one of those well known big box Home repair stores. if i could give it zero stars i would. I was using it to strip guitar paint. This was not up to the job. i made two attemps. followed the instructions. it says it will work in 15 minutes. put a thick layer on and after 35 minutes nothing budged. And i've already sanded layers off. On the second attempt i put a massively thick layer on and left it for two hours. Not even a single spec of paint came off when scraping. it didn't bubble, or curl one drop. my saliva would have done more damage. I'd wouldn't get close to this stuff.