Maimeri Idea Patina is a revolutionary range of products for amateur and professional use which reproduce a perfect imitation of the patina of age and oxidation of metal surfaces through natural chemical processes. With the exception of Bitumen, which is soluble in white spirit, all Patina products are water-soluble, thus permitting adjustment of the desired effect. Bitumen patina can be used over any of the metal colours, instead of the appropriate oxidising patina, as it does not cause a chemical reaction with the metal colours but produces a darkish matt finish to the object as if it had been a forgotten item in the attic. Bitumen patina can also be used over other patinas to increase the ageing effect by laying a smoky transparent film to enhance the contour and texture of the surface.