With a thick consistency that thins all acrylic paint and mediums, this gel retarder increases the ‘open‘ (working) time of acrylic paint. Lightweight, nontoxic, and water resistant and non-yellowing when dry, it also increases blending time to make the blending of colors and detail brushwork easier. Details:8 fl. oz. (237 ml)NontoxicWater resistant and non-yellowing when dryFor use with Liquitex Professional Acrylic Paint colors and mediums