I wasn't sure about this when I bought it. But I was needing something to distress a project and so I gave it a try. And I love it! I use it all the time now and I've barely used any of the bottle. It will last a long time. I love that it has a really small applicator tip and so it allows for detail work.
The only thing is that I tried it on a photograph and it did flake off after awhile, but that could have been user error. :)
I'll definitely be getting more when I evenutally run out.