Sargent Acrylic Mediums are formulated for use with student or scholastic acrylics. Mix Gloss Medium with paint for a increased gloss finish, or use Matte Medium to create matte effects and reduce glare. You can create a clear coat or translucent glaze over finished artwork with either medium if spread thinly. Both are permanent and water-resistant when dry but do not use as final glaze or varnish. Acid free!