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Oleogel is a thixotropic painting medium made with linseed oil and pyrogenic silica. Thixotropic!? This means a substance which is relatively solid and as you work it, it becomes mores viscous and liquid like, much the same if you stamp up and down in the same place on wet sand on a beach.
Oleogel is a clear pale amber gel that adds transparency and thixotropic body to oil, resin-oil or alkyd paint. Add directly to your paint to give it transparency without thinning its consistency. Add pigments or extenders to thicken it for creating impasto effects that do not sink in.
Oleogel does not contain driers, so it is safe to use in oil painting without worry of cracking. When mixed with colours, Oleogel does not slow the drying time.
Oleogel adds transparency without losing the body of the paint. In the picture on the left Oleogel is in the center, Flake White on the left and a mixture of Oleogel and Flake White on the right. The Flake White is stiff, plastic and short, but when mixed with Oleogel the mixture is semi-transparent, soft, yet sculptural.
Mix directly into your paint right on the palette.
To make your own paint with Oleogel, add directly to pigment powder until a stiff paste is obtained (almost the consistency of putty). Grind the paste with a muller on a flat surface before storing in collapsible tube. Some of its thixotropic property will be temporarily lost when grinding Oleogel with a muller, but should be restored when allowed to stand.