Cobra Study Water Mixable Oil Colour - The student grade version of Cobra Artist Water Soluble Oils - Offering unlimited possibilities for the ambitious artist, this oil color produces wonderful and long-lasting results without having to use solvents such as turpentine or white spirits. It has a high degree of pigmentation and provides typical oil paint results, such as sharp brush strokes and wonderfully deep colors. It can be easily mixed with water. The color and textures remain unchanged after paint dries.