I may have been ripped off, please help with acid wash.

[Yarzy]

Thanks! And do I just move it back and forth until the stain comes up or do I hold it there? Not sure the exact process. Thanks again for your help!

 

[Poolbreh]

Move it back and forth, until you get an idea of how much it will take off. If you leave it in one spot too long with enough MA it will darken that area. So start with a more diluted MA and slowly work it, and adjust based on results.