Modern students think this is cheating or "re-wetting." In reality, it restores the optical saturation. Once the oil sinks in, the colors return to their wet vibrancy. You can then paint fresh strokes on top without the "fried egg" effect (where new paint beads up on a dead surface).
White is the slowest drying pigment (sometimes taking 2 weeks). By adding a drier to white, it dries overnight. The rest of your colors (which contain natural driers like manganese in umber) will stay wet longer, allowing you to blend edges seamlessly for days. oil painting secrets from a master pdf
Paint your grisaille darker than you think you need. A glaze of yellow ochre over a dark grey becomes antique gold. Over a light grey, it looks like cheap plastic. Secret #2: The Medium Myth (Why "Liquin" Isn't Always Right) If you search for a master's PDF, you will see endless recipes. The secret is not the recipe; it is the viscosity layering . Modern students think this is cheating or "re-wetting