Mediums for Atelier Interactive Acrylic paints. Formerly known as impasto gel; a thick, fast drying water-based acrylic gel designed to exaggerate structure and sharpen textural edges of paint. Also increases the gloss level of paint. For detailed information about Atelier Interactive Acrylics, how to use them, video demonstrations and downloadable pdfs filled with tips and techniques visit: www.chromaonline.com