simply remove the stopper by inserting the point of a skewer (or similar object) into the hole and gently levering out
Excellent for increasing viscosity and building surfaces
This will allow the color and texture of the support to show through
Derwent Artists Colour Chart click here
Opaque pastel shades can be obtained by adding equal amounts of white to a colour
Matisse Artist Drying Retarder 250ml Brand_Raphael simply remove the stopper byAdditions of MM1 Drying Retarder may be used in watercolouring, water wash effects, stain painting and hard edge techniques where it assists in pigment wetting, rapid colour diffusion and penetration. On raw canvas, the addition of 3 5% MM1 Drying Retarder, pre diluted with water, will improve the mixing of inorganic pigments, oxides, earth colours, titanium dioxide and metallic pigments. T The MM1 Drying Retarder will slow the evaporation of water