Water based surfacer, spray can format, fills minor gaps and scratches on surface of object for painting. Mr. Surfacer is an internationally famous brand name for reducing the presence of small scratches and leveling a surface in preparation for painting. In addition, it also acts as a primer allowing for better paint adhesion and provides a fine neutral color to eliminate the effects of the original subject's coloring affecting the paint's hue. Comes in different particle sizes (higher the number, the finer the particles). Aqueous version is water based with a less chemical scent compared to regular Mr. Surfacer.