Winsor & Newton Artists Acrylic Gloss Gel increases gloss, depth of colour & transparency in acrylics without thinning. Winsor & Newton’s range of Artists’ Acrylic mediums are high-quality formulations designed to complement the Artists’ Acrylic colours range. They bring control & working characteristics without colour shift or loss of depth. Winsor & Newton Artists Acrylic Gloss Gel dries to a gloss finish.