Prep Stuff Skin Sanitizer and Tattoo Stencil Remover. Safely prep your client’s skin for the tattooing process with Prep Stuff. Prep Stuff’s formula kills 99.9% of germs and microbes without removing any of the skin’s vital oils. Not only does it sanitize the tattoo area, but when used with Stencil Stuff, it holds the stencil strongly on the skin. Prep Stuff can also be used to remove a stencil when you aren’t happy with the placement. If you need to change or rearrange the stencil, simply spray Prep Stuff and wipe off. For the best results, shake the bottle well before use and rub it in with a gloved hand until dry.