These markers can write on a variety of surfaces, such as plastic, metal, wood, glass, plaster, canvas, and more. Paint can be scraped off from nonporous surfaces like glass, etc. but will adhere permanently to porous surfaces such as wood, paper, etc. Water-based pigment ink is non-toxic, lightfast, and waterproof. The ink won’t bleed through paper (unlike alcohol-based markers) and is excellent for vibrant signs and craftwork.