Winsor & Newton Drying Oils - What's the Difference? 

with Artisan colores?can i mix a litle linseed oil?

+Ana Clerins West If you use traditional linseed oil it will start to negate the paints ability to be easily washed out with water. If you need to thin the Artisan, consider their watersoluble linseed oil: www.dickblick.com/products/winsor-and-newton-artists-painting-medium/ .

+Sara Nazirli Yes you can, i do it. you asked 8 months ago and no once answered wow! i just saw you comment now. you can do that at the finishing layers of your paint following the method of fat over lean. i make painting vids as well ^^

+Ieva Valinskaitė Acrylic paint would probably have been the better choice, as it will dry within a day. However, because you have already used the oil, you cannot apply the acrylic on top of it. The oil will eventually dry, but it can take 3 - 5 days to dry completely and will still actually be wet inside for several months.

The oils used in painting are vegetable oils are very similar to cooking oil, and as such don't present any risk of flammable fumes like volatile solvents. (Despite the similarity, however, art supply oils aren't food-safe.) The risk of combustion exists when drying oils are distributed over a large surface area, like when rags are saturated with oil (or gloves or steel wool). When these oil-saturated materials accumulate, heat from oxidation (drying) builds up, and as heat increases, oxidation accelerates and the result can be spontaneous combustion, even without spark or flame. In the bottle, on a brush, or on a palette or canvas, there is no risk of combustion, so bottles of linseed oil don't need any special storage measures, unless the package indicates doing so. A single oil-soaked rag can be left flat to dry and discarded, but an accumulation of rags should be placed in a lidded metal can with water in the bottom, and emptied after every day. Hope this helps!