Use Matisse Drying Retarder Medium to slow the drying time of acrylic paint. This medium is perfect for extended painting sessions.
Jo Sonja Gel Retarder Medium 250ml
MM1 How to Extend Your Acrylic Paint Drying Time - Matisse Retarder Medium
FAQ: Matisse Open Medium Vs Matisse Retarder
U.S. Art Supply Acrylic Retarder Acrylic Medium, 200ml Tube (6.7 Ounces) - Mixed with Color gives you longer Working Times : Arts, Crafts & Sewing
Painting with Acrylics: Matisse Medium Drying Retarder
Buy acrylic slow dry medium
Matisse Archives - Articci
Matisse Drying Retarder
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Jo Sonja Gel Retarder Medium - Acrylic Mediums - The Art Scene