Winsor & Newton Artists' Oil Colour is unmatched for its purity, quality and reliability. Every Winsor & Newton Artists' Oil Colour is individually formulated to enhance each pigment's natural characteristics and ensure stability of colour. By exercising maximum quality control throughout all stages of manufacture, selecting the most suitable drying oils and method of pigment dispersion, the unique individual properties of each colour are preserved. Artists' Oil Colour uses the highest level of pigmentation consistent with the broadest handling properties. The quantity of pigment used provides covering power and tinting strength.