Liquid white is a thinned-down white oil paint with a creamy, fluid consistency, used to coat a canvas before painting wet-on-wet. You can make it at home by mixing white oil paint (or dry white pigment and oil) to a consistency closer to heavy cream than the thick, buttery paste that comes out of a tube. The process is straightforward, but the choices you make in pigment, oil, and ratio will affect how it handles on the canvas.
What Liquid White Actually Is
Liquid white, sometimes called “magic white,” is not a special formula. It’s white oil paint thinned with additional oil until it flows easily. Bob Ross popularized it as the base layer for his wet-on-wet technique, where you apply a thin, slippery coat of white across the entire canvas before adding color. This lets subsequent brushstrokes blend and move instead of dragging against dry canvas.
The branded versions are convenient but expensive. A generic version is just white paint mixed with your preferred painting oil until it reaches that pourable, cream-like state. If you want more control over the ingredients, or you want to make it in bulk, you can start from scratch with dry pigment and oil.
Choosing Your White Pigment
Titanium white is the standard choice. It’s bright, slightly cool-toned, and extremely opaque with high tinting strength. When you mix it into other colors later, it holds its own. For a liquid white base coat, that opacity matters because you want a consistent white film across the canvas.
Zinc white is the other common option, but it’s a poor fit here. It has roughly one-tenth the tinting strength of titanium white and is highly translucent. That transparency is useful for glazing techniques, but for a base coat meant to provide a bright, slippery white surface, titanium white does the job far better. Zinc white also creates more brittle paint films over time, which can lead to cracking.
Picking the Right Oil
For white paint specifically, artists often worry about yellowing. Linseed oil is the most common and reliable binder for oil paint, but it has a reputation for yellowing more than alternatives like safflower, walnut, or poppy oil. In practice, the difference is smaller than you’d expect.
Testing by Golden Artist Colors found that after two and a half years, titanium white paints made with different oils were nearly indistinguishable. The total color difference between the most and least yellowed samples was a single point on a perceptual scale, an amount most people can barely detect. The oils tend to converge toward a similar appearance over time.
What matters more than oil type is how well the paint binds the oil. Titanium white mixed with nothing but alkali-refined linseed oil can actually yellow more in thick applications because the oil separates and migrates to the surface during drying. Adding a small amount of an extender like calcium carbonate or barium sulfate helps the paint hold onto its oil and reduces this effect. For a simple liquid white, though, you’re applying it in a very thin layer, and thin films of any oil show almost no visible yellowing.
Alkali-refined linseed oil is the most consistent and widely available option. Cold-pressed linseed oils vary quite a bit from batch to batch. If you strongly prefer a non-yellowing oil, safflower or walnut oil works, but keep in mind that they produce slightly weaker paint films and dry more slowly.
The Simple Method: Tube Paint Plus Oil
The fastest way to make liquid white is to start with a tube of titanium white oil paint and thin it down. Squeeze a generous amount onto your palette or into a small container, then add your oil (linseed, safflower, or walnut) a few drops at a time, stirring with a palette knife. Keep adding oil and mixing until the paint flows like heavy cream. It should slide off the palette knife in a smooth ribbon rather than holding a stiff peak.
There’s no exact ratio because tube paints vary in thickness between brands, but a rough starting point is about two parts paint to one part oil by volume. Some artists prefer a thinner mix, closer to one-to-one. The right consistency is the one that lets you coat the canvas in a thin, even layer using a large brush without leaving heavy texture.
Making It From Scratch With Dry Pigment
If you want to control every ingredient, you can make your own white oil paint from titanium white pigment powder and oil, then thin it to liquid white consistency. This gives you a purer product and can be more economical in large batches.
Tools You Need
- Glass muller: a heavy, flat-bottomed glass tool for grinding
- Glass slab: a piece of tempered or plate glass with a lightly etched (frosted) surface so the pigment grips
- Palette knife: for mixing and scraping
- Airtight containers: glass jars or empty aluminum paint tubes for storage
The Mulling Process
Place a small mound of titanium white pigment on the glass slab and make a well in the center. Add a few drops of oil into the well, then use your palette knife to fold the pigment into the oil, scraping and stirring until you get a stiff, workable paste. Add more oil or pigment as needed to reach a thick consistency. You want it stiffer than your final product at this stage because mulling will loosen it.
Place the muller on top and begin rotating it over the paste using moderate, even pressure. You don’t need to bear down hard. The glass surfaces do the work of breaking apart pigment clumps and coating each particle with oil. Periodically lift the muller and use the palette knife to scrape paint from around the edges and from the bottom of the muller back into the center. Continue mulling until the paint feels smooth and buttery, with no gritty texture when you rub a tiny bit between your fingers.
A damp towel placed under the slab keeps it from sliding on your work surface. If the muller suctions to the glass, slide the palette knife under its edge to pry it free.
Once your paste is smooth, transfer it to a container and thin it with additional oil to the creamy liquid white consistency described above.
Safety When Handling Dry Pigment
Titanium white pigment is considered one of the safer options (it’s nontoxic and used in everything from sunscreen to food coloring), but any fine powder poses an inhalation risk. Pigment particles are small enough to reach deep into your lungs, and once airborne they’re easy to breathe in without realizing it.
Wear a respirator rated for fine particulates (N95 at minimum, P100 for the best protection) whenever you’re scooping, pouring, or working with dry pigment before it’s been wetted with oil. Work in a well-ventilated space, and wet the pigment with oil as quickly as possible to keep it from becoming airborne. Once the pigment is mixed into paste, the inhalation risk drops dramatically.
Drying Time Expectations
White oil paints are among the slower-drying colors. Titanium white and zinc white both take more than five days to become touch-dry in thin films, though the exact time depends on the thickness of your application and the temperature of the room. Warmer, well-ventilated spaces speed things up. Thicker applications take proportionally longer.
Since liquid white is applied as a very thin layer, it will dry faster than paint squeezed thickly from a tube, but you’re typically painting into it while it’s still wet, so drying time of the base coat itself rarely matters. What does matter is knowing that white layers underneath your painting will be among the last to fully cure. If you’re building up layers, keep the general rule: apply slower-drying colors over faster-drying ones to avoid cracking as the painting ages.
Storing Your Liquid White
Because liquid white contains a high proportion of drying oil, it will form a skin on the surface when exposed to air. If you make a batch larger than one session’s worth, transfer the leftover into a glass jar with an airtight lid. Fill the jar as full as possible to minimize the air inside. Dropping a few clean glass marbles into the jar raises the liquid level and reduces the oxygen trapped above the paint, which slows skin formation significantly.
If you store it in aluminum paint tubes instead, cap them tightly and wipe the threads clean before sealing so dried paint doesn’t glue the cap shut. Store tubes cap-down. This way, any oil that separates rises to the bottom of the tube (away from the opening), so the paint near the cap stays well-mixed and ready to use.
Keep your liquid white at a cool, stable room temperature, roughly 10 to 20°C (50 to 68°F), out of direct sunlight. Heat can cause the oil to separate from the pigment, while very cold temperatures may change the consistency. In humid climates, storing tubes in a sealed container with a desiccant packet prevents the metal from corroding.