Walk into any art shop in the UK and you will find the same two tubes competing for attention: acrylic and oil. Both sit happily on canvas, both can produce serious work, and both come in student and professional ranges that make the decision harder rather than easier. The differences that matter to a beginner are practical rather than mysterious — how long the paint stays workable, how you clean up, what a tube costs and how the finished surface holds up. Here is what to know before you commit.
How Each Medium Behaves on Canvas
Acrylic paint is pigment suspended in an acrylic polymer emulsion. It is water-based, thins with water, and locks into a flexible plastic film as the water evaporates. Oil paint is pigment ground into a drying oil, usually linseed, safflower or walnut. It does not dry by evaporation; it cures by oxidation, absorbing oxygen and hardening slowly over time.
Both belong on canvas, and both will last for decades if the surface underneath is prepared properly. That point matters more than any brand. Oil paint applied straight to raw canvas will eventually rot the fabric, so you need a primed surface. Acrylic gesso is fine under acrylics, and many painters use it under oils too. Traditionalists prefer an oil-based primer for oil work, which gives a slightly slicker surface.
Drying Times: The Difference You Notice First
This is where the two media pull apart, and it shapes how you paint far more than colour or cost.
A thin layer of acrylic is touch-dry in minutes; indoors, expect around fifteen to thirty minutes, with thick paint taking longer. You can layer an entire painting in an afternoon, but blending two colours on the canvas becomes a race. Once the paint sets, pushing it around only lifts or scuffs it.
Getting more working time from acrylics
Use a stay-wet palette, mist the surface with water as you work, and add a retarder sparingly — too much slows curing and weakens the film. A cooler room, away from a radiator or sunny window, buys you extra minutes. Many painters also work in sections, finishing one area before moving on.
Oils stay movable for hours, sometimes days in thick passages. Thin layers touch dry in a day or two, while a full cure takes weeks or months. That slowness is the freedom people fall in love with: you can step back, make a cup of tea, and return to find the edges still soft enough to push.
The rule that keeps oils sound long-term is fat over lean. Each successive layer should contain more oil, or less solvent, than the one beneath it. Skip that and the surface may wrinkle or crack. If you need speed, alkyd mediums and alkyd paints accelerate curing, but use them consistently rather than in one layer only.
Flexibility and Durability
Acrylic film is reasonably flexible and copes well with a canvas that gets knocked or gently flexed. It is not indestructible. Acrylic can become brittle in very cold conditions, so avoid storing finished work in an unheated garage or shed through winter.
Oil films stay flexible for years, then gradually become more brittle as they age. A canvas that is rolled, dropped or repeatedly flexed is more likely to develop a network of fine cracks. Both media benefit from a final varnish once fully dry — months for oils, at least a couple of weeks for thin acrylic work. Varnish evens out the surface, protects against dirt and makes future cleaning easier. Both also attract dust, oils more so because they stay tacky for longer.
Colour Depth and Finish
Oils have the edge for many painters. The long open time lets you blend wet-into-wet until transitions disappear, and oil glazes — transparent layers over dried paint — build a luminosity that is hard to match. Artist-quality oils tend to carry a heavy pigment load, so a little goes a long way and the darks stay rich.
Acrylics dry to a slightly darker, flatter finish than they appear when wet. That shift catches beginners out, so mix a test patch on scrap canvas and let it dry before committing to a large area. Acrylics can look glossy and deep, but you usually have to work for it: gloss medium in the mix, glazing medium for transparent layers, and a satin or gloss varnish at the end. Matte acrylic has a soft, chalky character that suits some subjects and not others.
Cost and What You Actually Need to Start
Acrylics are cheaper to begin with, largely because they demand no solvents and clean up with water. Neither medium is expensive if you buy student ranges and keep the palette small. A starter kit for either looks roughly like this:
- Paint: six to eight colours. Titanium white, a warm and a cool yellow, a warm and a cool red, ultramarine, a green, and burnt umber.
- Surfaces: primed cotton canvas, canvas panels or canvas boards. Panels are sturdy and cheap for practice.
- Brushes: synthetic for acrylics, since acrylic is hard on natural hair; hog bristle or stiff synthetic for oils.
- Mediums: a stay-wet palette and retarder for acrylics; a drying oil or alkyd medium for oils.
- Extras: palette, rags, two water or solvent pots, and a bar of brush soap.
- Varnish: bought when the painting is dry, not on day one.
Oils cost more per tube, especially in artist ranges, but a tube stretches further than you expect because you can extend it with medium. Very cheap oils are often thin, oily and weak in colour — a false economy if you care about the result. Student acrylics, by contrast, are usually perfectly workable, though cheaper ones use fewer pigments and may shift more as they dry.
Cleanup, Solvents and Studio Practicalities
Acrylic cleanup is simple while the paint is wet: warm water, soap, and a little care around the ferrule. Once acrylic dries in a brush it sets like plastic, and you will need a proprietary brush restorer to rescue it. Wipe brushes on a rag and wash them as soon as you pause, even if you plan to carry on in ten minutes.
Oils need solvent — white spirit or odourless mineral spirits — or a good oil-based soap and warm water. Solvents are the main practical drawback: they smell, they need ventilation, and they must be kept away from flames, children and pets. Soaked rags are also a fire risk, because drying oils generate heat as they oxidise. Keep them in a sealed metal container or soak them in water before binning. If fumes bother you, water-mixable oils clean up with soap and water, though they handle slightly differently from traditional oils.
A Simple Way to Decide
Start with acrylics if you have limited time, work in a shared or small space, want to learn colour mixing and composition quickly, or would rather not handle solvents. Start with oils if you love slow blending, want the depth and gloss the medium is known for, and can give a painting the time and ventilation it needs.
You do not have to choose forever. Many painters use acrylics for studies and underpaintings, then oils for finished work. Acrylic underneath oil is fine provided the acrylic is fully dry; never the other way round. Buy a small set of one medium, one decent brush, and a primed canvas. The first painting will teach you more than any comparison.
Photo: bilgecangurer / Pixabay
