Water colour drawing-gum Sennelier
This liquid allows parts of the support to be isolated during application of washes, watercolours, ink or gouache. It is slightly coloured in order to distinguish it from the white surface. Colour may be applied following a drying period of a few minutes. Once the paint is dry, peel the gum away from masked areas. Always perform a prior test of the gum on the same type of support. Clean tools immediatly after use in warm soapy water.