Acrylic vs Oil Paint: What I Actually Choose, and Why

This question arrives from two very different directions.

Painters ask it because they want to know which to commit to. Collectors ask it because they have noticed that two paintings of similar size can be described differently and they want to know whether it matters — for the look, for the value, for how long the thing will survive on their wall.

Both are fair questions and they have different answers. I use both media, frequently in the same painting, so I have no allegiance to defend.

The one difference everything else comes from

Oil paint is pigment suspended in oil. It dries by oxidation — the oil reacts with air and slowly hardens. This takes days for a thin layer and months or years for a thick one.

Acrylic paint is pigment suspended in a polymer emulsion in water. It dries by evaporation. The water leaves and the polymer particles fuse. This takes minutes.

Everything else — the handling, the colour, the surface, the price, the conservation — follows from those two sentences.

What oil gives you

Time. This is the real gift. An oil passage stays workable for hours, sometimes days. You can push a wet edge into another wet edge and get a transition that has no seam in it at all. Skin, cloud, the turn of a shoulder into shadow — anything that needs a truly continuous gradient wants oil. You can also come back tomorrow and keep working the same passage, which changes how you think.

Depth. Oil is optically richer. A transparent oil glaze over a dry colour beneath does something specific: light passes through the glaze, reflects off the layer below, and comes back through the glaze again. The colour you see was never mixed on a palette — it was assembled by the light. That is where the sense of interior glow in old paintings comes from, and it is very hard to fake.

Colour that stays put. Oil dries essentially the same colour it looked when wet. You can trust your eye.

The costs are real. Solvents, though I work largely solvent-free now with oils that thin in safer media. Slowness — the painting dictates your schedule, not the other way round. And a strict rule about layering: fat over lean, thicker and oilier layers on top of thinner ones, or the surface will crack in a few years.

What acrylic gives you

Speed. Acrylic dries in minutes, which means you can build ten layers in a day. For the exploratory stage of a painting, when I am rejecting three ideas an hour, this is not a convenience — it changes what is possible.

Physical body. Acrylic mediums, gels and pastes let you build genuine relief that stays put and stays flexible. If a painting needs to be a surface as much as an image, acrylic gets you there. Oil impasto that thick would take a year to be safe.

Stability and toughness. Acrylic films stay slightly flexible, do not yellow, and do not need varnishing for protection in the way oil does. In a climate like this one, that matters more than people realise.

It is water-based. No solvents, easier ventilation, easier cleaning, and a studio you can share a home with.

The costs are also real. Acrylic dries darker than it looks wet, which takes years to compensate for instinctively. Blending is genuinely difficult — the edge you were working sets before you have finished the thought. And there is a certain plasticity to a pure acrylic surface that some eyes read as slightly synthetic. It is not a flaw exactly, but it is a signature, and you either want it or you do not.

What I actually do

I use both, and almost always in this order: acrylic first, oil last.

Acrylic for the ground, the texture, the underpainting, the fast rejection of ideas, the broad colour architecture. Oil for the final passages — the depth, the darkest darks, the place where the subject resolves, the glazes that give the surface its interior light.

There is one rule here and it is not negotiable. Oil over acrylic is stable. Acrylic over oil is not. Acrylic cannot form a durable bond on top of an oil film, and a painting made that way will eventually delaminate. Not immediately. In ten years. If you are buying a mixed-media painting from anyone, this is a legitimate question to ask, and any painter who works this way will be pleased you asked.

You can see this combination in most of my mixed-media work — the process is described in detail here.

Some pieces stay entirely in one medium. The ballerina paintings, like Colorful Ballerina, are acrylic throughout, because they want that immediacy and the slight dryness of an acrylic surface suits the movement. Portraits like Self-Portrait are oil throughout, because a face needs the transitions only oil can give.

For collectors: does it matter?

Four honest answers.

Does oil hold value better? Historically the auction market has favoured oil, and there is a real perception advantage. But the artist, the work and the provenance matter enormously more than the medium. A significant acrylic painting will always be worth more than a mediocre oil.

Which lasts longer? Oil has five hundred years of evidence behind it, and it also has five hundred years of documented failures — cracking, darkening, yellowing, sinking. Acrylic has only existed since the middle of the twentieth century, so its very long-term behaviour is partly extrapolated. What we do know is that acrylic is more flexible, does not yellow, and is markedly more tolerant of humidity swings. In this region I consider that a genuine practical advantage, whatever the auction market thinks.

Which is more fragile day to day? Acrylic surfaces attract dust slightly more, because the film stays a little soft. Oil surfaces are harder but more brittle, and are the ones that crack if a painting is handled badly or hung against a cold exterior wall. Both are covered by the same care advice, which I set out in the climate and framing guide.

Should the price differ? Oil paintings often cost more, and it is fair to know why. Materials are more expensive, but the real difference is time — the drying between layers is time the studio cannot use for anything else. That is what you are paying for, not the tube.

For painters: which should you learn?

Learn oil first, if you can.

Not because it is superior, but because oil forces you to make decisions slowly and to understand what you are doing. Acrylic's speed will let you cover a mistake before you have understood it. Oil will make you sit with the mistake, and that is how you learn.

Then learn acrylic properly, as its own material rather than as fast oil paint. Most disappointment with acrylic comes from painters trying to make it behave like something it is not. Used on its own terms — building, layering, texture, hard edges, speed — it does things oil simply cannot.

And do not spend money on cheap paint of either kind. Student-grade colour has less pigment and more filler, which means you will be fighting weak, chalky mixtures and drawing the wrong conclusions about your own ability. Fewer colours at professional quality will teach you far more than a large box of poor ones.

The short version

Oil for depth, transition and time. Acrylic for speed, body and stability. Neither is more serious than the other, and the interesting work of the last fifty years has been made in both.

If you are choosing a painting rather than a medium, ignore all of this and stand in front of the work. The right painting announces itself long before you get to the label.

The collection is here if you would like to look, and I am always glad to answer material questions through the enquiry page.