Canvases by artists using oil paints are the most popular. Technique a la prima - "raw", without under-painting — in which, even after the first session, the artist writes on a non-dried layer or refreshes the drying film that appeared on it in a certain way. This is the first and most common method a la prima.

Oils used in painting are divided into two groups according to their composition and purpose. The first includes the so-called fatty drying oils obtained from the seeds of various plants and related to fats of vegetable origin, such as linseed, poppy, nut and other similar oils. The second group includes oils of various origins that do not belong to fats,…

Linseed oil is extracted from flax seeds, and the quality of the resulting product largely depends on the place of cultivation of seeds, their maturity and purity. Thus, the oil obtained from weed seeds contains an admixture of rapeseed, rapeseed and other oils. The oil squeezed out without heating the seeds is light and has a golden yellow color; when hot…