This 92 color line contains only the highest quality color pigments, carefully selected for purity and lightfastness. Each color in the line has been formulated to achieve the maximum pigment concentration and color strength, consistent with good handling properties and stability. Because no fillers or extenders are used in Quiller Acrylics, most colors dry to a natural gloss while those with larger pigment particles create a more satin finish. Quiller Acrylics have a smooth buttery texture that retains brush and knife marks, yet is not stiff or difficult to manipulate. They allow the user to create bold, crisp impasto effects normally associated only with oil colors. All Quiller Acrylic products are mutually compatible. To thin, use Quiller Acrylic Mediums or water. Do not mix with oils, mineral spirits or turpentine. Quiller Acrylics will not adhere well to oily or greasy surfaces. Keep brushes and tools wet during use. Clean brushes and tools with soap and water soon after use.