The extra-fine artists’ oil colors series represent thick ground fine mixtures of highly-qualified pigments and binding agents produced on the basis of linseed oils. The natural resins- dammar and mastic- are added into compounds of the binding agents. Extraordinary brightness and purity of colors. These oil paints are characterized by a perfect balance of primer and finished colors. Fine-grained, notable for their excellent lightfastness. These oils do not change their original colors after drying, so that they can be (and have widely been!) used in restoration works. Each tube has the opaqueness, lightfastness and color (international code of the pigment used) indexes.*** – high lightfastness**- medium lightfastness*- low lightfastness Please see photos for more details since they are an essential part of the description.