Quick answer: To clean oil paint brushes between colors, first squeeze or wipe the excess paint out on a rag or paper towel, then swish the brush in a jar of odorless mineral spirits or a solvent-free alternative such as safflower oil, wipe again, and check the bristles on a clean part of the rag until no color transfers. For a quick switch between similar colors, wiping alone is enough. Keep two rinse jars, one dirty and one clean, and save the thorough soap-and-water wash for the end of the session.
Knowing how to clean oil paint brushes between colors is what separates a muddy painting from a clean one. Oil paint does not dry fast enough to protect you from contamination the way acrylic does. A trace of alizarin left in the bristles will pink every color you mix for the next ten minutes. On the other hand, scrubbing a brush fully clean every time you change color wastes solvent, time and bristles. The goal is a fast, repeatable routine that removes enough paint for the next color without turning every color change into a cleaning project.
This guide gives you that routine step by step, with variations for solvent and solvent-free setups, a note on how clean is clean enough for different color jumps, and what to do at the end of the session. The techniques matter most in work with wide value and color ranges, such as landscapes, where you may move from a dark green shadow to a pale sky in the same minute. If that is your subject, the paint you choose makes a difference too; see our picks for oil paints that perform well in landscape work.
What You Need at the Easel
- Two rinse containers with lids. Glass jars or purpose-made brush washers with a coil or screen at the bottom work well. One holds dirty solvent, the other clean.
- Odorless mineral spirits or, for a solvent-free studio, a jar of inexpensive safflower, linseed or walnut oil.
- Lint-free rags or paper towels. Old cotton T-shirts cut into squares are ideal; shop towels are a good disposable option.
- A sealed metal can for oily rags. Rags soaked in drying oils can heat up as they oxidize; store them flat, or in water, or in a closed metal container.
- Brush soap or plain dish soap for the end of the day.
Keep the rags where your non-dominant hand can reach them without looking. Most of this routine happens while your eyes stay on the painting.
How to Clean Oil Paint Brushes Between Colors: The Routine
Step 1: Wipe out the bulk of the paint
Fold a rag over the ferrule and pull it toward the tip, squeezing gently. Rotate the brush and repeat two or three times. This removes most of the paint before any solvent touches the brush, which keeps the rinse jar cleaner for longer. For a flat brush, squeeze both faces and then the edges. For a round, squeeze and twist.
Do not pull the bristles sideways or splay them; always pull along their length.
Step 2: Swish in the dirty jar
Dip the brush into the first jar of solvent or oil only to the depth of the bristles, not the ferrule. Agitate it against the coil or the side of the jar for a few seconds, pressing lightly so the liquid works into the center of the bristles. Avoid jamming the brush tip down into the bottom, which bends and splays it.
Step 3: Wipe again
Squeeze the brush out on a fresh part of the rag. Look at the mark it leaves. If it is pale and nearly colorless, move on. If strong color still comes out, repeat steps 2 and 3.
Step 4: Rinse in the clean jar only when needed
For a jump from a dark or staining color to a light one, give the brush a second quick swish in the clean jar and a final wipe. For most changes between related colors, the dirty jar is enough.
Step 5: Check and shape
Draw the brush once across a clean corner of the rag or the edge of your palette. If the streak is clear, reshape the tip between your fingers and load the next color. The entire sequence should take ten to fifteen seconds once it is habit.
How Clean Is Clean Enough?
You do not need a spotless brush for every change. Match the effort to the color jump.
| Color change | Cleaning needed | Why |
|---|---|---|
| Within the same family (one green to a nearby green) | Wipe only | Trace contamination blends in |
| Warm to warm, similar value (orange to red) | Wipe only, or wipe and one swish | Residue shifts hue slightly but stays within range |
| Dark to light of any hue | Wipe, swish, wipe, clean-jar swish, wipe | A little dark paint grays a light mixture badly |
| Staining colors (phthalo, alizarin, dioxazine) to anything | Full routine, check twice | These pigments cling to bristles and tint everything |
| Anything to white | Full routine | White shows every trace |
| Complementary colors (blue to orange) | Full routine | Mixing complements produces mud |
Many painters sidestep the problem entirely by dedicating brushes: one or two for lights, one or two for darks, one for the sky and one for staining colors. Fewer color changes per brush means fewer cleanings.
Solvent vs Oil for Between-Color Cleaning
Both approaches work. They differ in speed, smell and what they do to the next stroke.
| Factor | Odorless mineral spirits | Vegetable oil (safflower, linseed, walnut) |
|---|---|---|
| Speed of cleaning | Fast; dissolves paint quickly | Slightly slower; dilutes rather than dissolves |
| Fumes | Low but present; ventilate | None |
| Effect on next color | Thins the paint slightly; can make it lean | Adds oil; keeps paint fatter |
| Effect on brushes | Dries natural bristles over time | Conditions bristles |
| Disposal | Settle and decant; dispose of sludge as hazardous waste | Settle and decant; oily rags need careful storage |
| Fat over lean impact | Encourages lean early layers | Watch that early layers do not become too oily |
A reasonable middle path is solvent for the lean underpainting stages and oil for later, fatter layers, which keeps the brush residue consistent with the layer you are painting. Whichever you use, wipe the brush well before loading new paint; a brush dripping with either liquid will thin the next color and weaken your mixture.
Keeping the Rinse Jar Useful
A jar full of muddy solvent cleans nothing. A few habits keep it working:
- Wipe first, always. Most of the paint should end up on the rag, not in the jar.
- Use a jar with a screen or coil. Pigment sinks below it and the brush never touches the sludge.
- Let it settle overnight. Pigment drops to the bottom. Pour the clear liquid off into a fresh jar and wipe out the sludge into the rag can. The same solvent can be reused for weeks this way.
- Promote the clean jar. When the dirty jar gets too murky, the clean jar becomes the dirty jar and you add fresh liquid to a new clean one.
- Keep lids on. Evaporation wastes solvent and adds fumes to the room.
Cleaning Different Brush Types Between Colors
Hog bristle
Stiff and forgiving. Squeeze hard with the rag and swish vigorously. These brushes tolerate solvent well but benefit from a conditioning oil wash at the end of the day.
Synthetic
Smooth filaments release paint easily, so wiping alone often does the job. Strong solvents can soften some synthetics over time, so prefer odorless mineral spirits over stronger products.
Soft natural hair (sable, mongoose, squirrel)
Handle gently. Blot rather than squeeze, swish lightly and avoid pressing the tip against the jar bottom. Oil cleaning is kinder to these hairs than repeated solvent dips.
Fan and filbert brushes
Paint hides at the base where the hairs meet the ferrule. Work the rag into that area and swish a little longer than you would for a round.
Common Mistakes
- Leaving brushes standing in the jar. Even for a few minutes, bristles resting on the bottom bend permanently and solvent wicks into the ferrule, loosening the glue.
- Dipping to the ferrule. Paint and solvent trapped there dry hard and splay the brush from the inside.
- Skipping the wipe check. A single stroke on a clean rag tells you whether the brush is ready. Painters who skip it find out on the canvas.
- Using one jar. Without a clean second jar, the last rinse is always slightly dirty.
- Overcleaning. Full washes between every color dry out bristles, waste solvent and interrupt the flow of painting.
- Piling oily rags in an open bin. Linseed-soaked rags can generate heat as they oxidize. Lay them flat to dry or seal them in a metal can.
How to Clean Oil Paints Off Brushes at the End of the Session
Between-color cleaning keeps your mixtures true; end-of-day cleaning keeps your brushes alive. The two are different jobs.
- Wipe and swish as above until no more color comes out in the rinse jar.
- If you use solvent, follow with a swish in oil or rub a little oil into the bristles. This lifts the last traces of paint and conditions the hair.
- Work a small amount of brush soap or dish soap into the bristles in the palm of your hand with lukewarm water. Rinse and repeat until the lather stays white.
- Rinse thoroughly, squeeze out the water, reshape the tip and lay the brush flat or hang it bristles-down to dry. Never dry a brush standing bristles-up with water in it; water runs into the ferrule.
- Once dry, store flat or upright in a jar, bristles up.
If you plan to paint again tomorrow, an alternative is to wipe the brushes thoroughly, coat them lightly in safflower oil and lay them flat. Many painters do this for a day or two between sessions and save the soap wash for the end of the week.
A Faster Workflow for Color-Heavy Painting
When a subject requires many color changes, such as a landscape that moves from warm foreground to cool distance, these habits reduce cleaning time:
- Lay out the palette from light to dark and warm to cool, and mix in a planned order so consecutive mixtures are related.
- Use separate brushes for the three or four main color groups in the painting.
- Paint all passages of one color family before moving to the next, rather than hopping around the canvas.
- Keep a scrap of canvas board nearby to test a brush before committing a stroke.
Planning the color sequence of a painting session is covered in more depth in our guide to painting landscapes in oil, which walks through the order of work from sky to foreground.
FAQs
Do I have to use solvent to clean oil brushes between colors?
No. Wiping with a rag followed by a swish in safflower or linseed oil works well and produces no fumes. Solvent is faster and leaves the brush leaner, which suits early layers.
How often should I change the solvent in my rinse jar?
Let pigment settle overnight and pour off the clear liquid to reuse. Replace it entirely only when the decanted solvent stays cloudy or the volume gets low.
Can I use water to clean oil paint brushes between colors?
Not for traditional oils; water will not dissolve them. Water-mixable oils are the exception and can be rinsed in water during painting.
What is the fastest way to switch colors without cleaning?
Wipe the brush firmly on a rag and move to a related color, or keep several brushes going and assign each to a color group.
Why do my colors still look muddy after cleaning the brush?
Either paint is trapped near the ferrule, the rinse jar is too dirty, or the brush was still wet with gray solvent when you loaded it. Wipe harder, use a second clean jar and dry the brush before reloading.
Is it bad to leave oil paint on brushes overnight?
Paint left in bristles stiffens and eventually hardens. At minimum wipe them out and coat them with oil; a full soap wash is better.
Final Thoughts
Clean color in oil painting comes from a simple, repeatable habit: wipe, swish, wipe, check. Scale the effort to the color jump, keep two jars, and reserve the deep clean for the end of the day. Dedicated brushes for lights, darks and staining colors cut the number of cleanings further. For landscape painters juggling dozens of mixtures in a session, paint quality helps too, since well-pigmented tubes need fewer corrective mixes; our roundup of the best oil paints for landscapes covers what to look for.
