The Clarified Lean Medium, by Chelsea Classical Studios, is a Handmade oil medium that Uses lavender spike oil essence, which is a safer Alternative to ones made with turpentine, as it smells sweet, decreases drying time and thins the Paint. It is crafted from a mixture of pure, extra-pale, cold pressed linseed oil and lavender spike oil essence. For Chelsea Classical Mediums, even the ingredients of their mediums are Handcrafted to ensure absolutely the highest Quality Products. The oil in the Clarified Lean Medium is cold-pressed, purified and de-yellowed by traditional, Natural processes that strives to make the palest, cleanest pure linseed oil for artists' to Use.A "Fat" Medium refers to the “Fat Over Lean” technique, which means to apply a Paint layer rich in oil (a fat) over a layer with less oil (a lean) layer on a Painting. This simple principle is fundamental to controlling the Paint adhesion, drying time and glossiness of oil Colors. The Clarified Fat Medium, by Chelsea Classical Studios, is a Handmade oil medium that decreases drying time and increases glossiness. It is crafted from a mixture of pure, extra-pale, cold pressed linseed oil and lavender damar varnish. Chelsea classic studio mini sampler mediums 2x1oz