Earth Safe Finishes VOC Free Gel Medium is thick and white but dries clear. Gel Medium retains a texture when dry. Dries quickly. It can be used as a sealer over dyes, inks, paints, etc. You can use it for texture over paper or on paintings. Apply with a brush, foam brush, palette knife, trowel or even with fingers. Mix in metallics, Pigments and/or powders. It can also be used on clothing and textiles, with a stencil and/or painted on. Machine washable. It can be used on glass and is beautiful when Pigment, and/or one of our metallic products are layered over the top of it. Use also as a gel transfer medium.