Ink stain removers are specialized cleaning products designed to effectively remove ink stains from various surfaces, including clothing, fabric, carpet, upholstery, and more. It also removes stains from hard surfaces like plastic, sun mica, metal, etc. Ink stain removers are formulated to tackle a wide range of ink types, including ballpoint, fountain pen, permanent marker, nail paint, and more. safe to use on most fabrics, including delicate ones like silk or wool.