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Oil paint is thick, slow-drying and often pushed around with solvent, so it asks more of a brush than watercolor does. The Jackson’s oil painting brush you can buy on Amazon.com right now is the Jackson’s Onyx synthetic set of three: two rounds in sizes 8 and 12 and a 3/4-inch flat. The listing describes it as stiff-haired with great spring and good color-holding capacity, made for acrylic and oil.
That is a small, focused set, not a full kit. This review explains what the Onyx trio does well, where three brushes leave gaps, and which larger Amazon sets (including one with real hog bristle) round out an oil painter’s kit.
Quick answer: The Jackson’s Onyx Synthetic Brush Set of 3 is a good core for oil painters who want firm, springy synthetics in useful mid-to-large sizes. Because it only covers two rounds and one flat, pair it with the U.S. Art Supply 24-Piece Oil & Acrylic set, which adds natural hog bristle brushes for heavier paint, or with the Nicpro 30-piece set if you want filberts, angles and a fan in one roll.
Our Top Picks at a Glance
- Jackson’s Onyx Synthetic Brush Set of 3 — Best Jackson’s oil painting brush set on Amazon
- U.S. Art Supply 24-Piece Oil & Acrylic Brush Set — Best for adding hog bristle and long handles
- Nicpro 30pcs Paint Brush Set — Best for the widest spread of shapes and sizes
- Fuumuui 25pcs Paint Brush Set — Best for specialty shapes plus a palette knife
- Fuumuui 26pcs Professional Paint Brush Set — Best synthetic set for landscape painters
- GACDR Grainer Brush Set — Best add-on for texture, grass and wood grain
| Product | Best For | Key Spec | Key Strength | Price Tier |
|---|---|---|---|---|
| Jackson’s Onyx Set of 3 | Core oil and acrylic work | Rounds 8 and 12, 3/4 in flat; stiff synthetic | Firm with spring | $$ |
| U.S. Art Supply 24-Piece | Traditional oil kit | 12 hog bristle + 12 nylon, long handles | Natural bristle included | $ |
| Nicpro 30 pcs | Shape variety | 29 nylon brushes, 8 shapes, spatula | Broadest range | $$ |
| Fuumuui 25 pcs | Specialty shapes | 24 synthetic brushes, 9 shapes, knife | Daggers, cat tongue, rigger | $$ |
| Fuumuui 26 pcs | Landscape painting | Synthetic nylon, copper ferrules | Free-style multi-shape set | $$ |
| GACDR Grainer Set | Texture effects | 4 comb brushes, 1/4 to 5/8 in | Fast fur, grass, wood grain | $ |
How We Chose
Our picks reflect the Amazon listing details and specifications checked in October 2026, how well each brush or set’s fiber stiffness, shapes, sizes and handle lengths fit oil painting, and how widely each listing has been reviewed by Amazon buyers. We have not painted with these brushes. A short-handled flat set aimed mainly at gouache and watercolor was left out because it is a weaker fit for oil.
- Stiffness: oil paint needs firmer brushes than water media, especially for thicker passages.
- Solvent tolerance: synthetic filaments and hog bristle both handle solvent cleaning; soft natural hairs are less suited to heavy oil work.
- Handle length: long handles suit easel painting at arm’s length.
- Shapes: rounds, flats, filberts and brights are the oil painter’s essentials.
- Size range: enough large brushes for block-in, not only small detail.
Jackson’s Oil Painting Brush Review: The Onyx Set
1. Jackson’s Onyx Synthetic Brush Set of 3 — Best Jackson’s Oil Painting Brush on Amazon
The Onyx set is deliberately compact: a size 8 round, a size 12 round and a 3/4-inch flat. Jackson’s describes the hair as stiff, with great spring and good colour-holding capacity, and recommends the brushes for both acrylic and oil painting. Those are exactly the qualities oil painters look for in a synthetic: enough resistance to move buttery paint, and enough snap to return to shape after each stroke.
The sizes are well chosen for the main body of a painting. A size 12 round lays in shapes and masses, a size 8 round handles mid-level forms and edges, and a 3/4-inch flat covers backgrounds and planes. What the set lacks is anything small for detail, a filbert for soft-edged forms, and very large brushes for toning or big block-ins.
The listing details field lists “Plastic” under material, which most likely refers to the handle or packaging rather than the hair; the bullets clearly describe synthetic brushes. Handle length is not specified.
Best suited for: oil and acrylic painters who want a few dependable, firm synthetics in the sizes that do most of the work.
Key features
- Three brushes: round 8, round 12, 3/4 inch flat
- Stiff synthetic hair with strong spring
- Good colour-holding capacity per the listing
- Designed for oil and acrylic
Pros
- Useful working sizes with no filler brushes
- Synthetic hair tolerates solvent and acrylic cleanup
- Genuine Jackson’s line available in the US via Amazon
Cons and limitations
- Only three brushes; no detail size, filbert or bright
- Handle length and ferrule details not specified
- Higher cost per brush than budget sets
Buying consideration: think of the Onyx trio as the backbone of a kit. Plan to add a small round or liner and at least one filbert.
Why stiff synthetics suit oil painting
Traditional oil brushes are made from hog bristle, which is stiff and has split ends (flags) that hold paint. Modern stiff synthetics aim to imitate that resistance while cleaning more easily and lasting longer with solvents. They are also the practical choice if you paint in both oil and acrylic, since acrylic is hard on natural bristle. The Onyx description of “stiff haired” with “great spring” puts it in this camp.
Where hog bristle still shines is heavy, textured paint and scrubbing in thin underlayers. Many oil painters keep both: synthetics for smoother passages and edges, hog for vigorous work. That is why the hog-and-nylon U.S. Art Supply set below is a natural partner.
Alternatives Worth Comparing
2. U.S. Art Supply 24-Piece Oil & Acrylic Brush Set — Best for Adding Hog Bristle
This set is the most traditional oil kit in the group. It contains twelve long-handle natural hog bristle brushes (six rounds, six flats in sizes 2 to 12) and twelve long-handle synthetic nylon brushes in the same shapes and sizes, all in a canvas roll-up holder with 24 slots.
Having matching hog and nylon versions of each size is a smart way to learn which fiber you prefer for which job. Long handles make the set well suited to easel work.
Best suited for: beginning and intermediate oil painters who want both bristle types in long handles.
Key features
- 12 natural hog bristle brushes, rounds and flats, sizes 2 to 12
- 12 synthetic nylon brushes, rounds and flats, sizes 2 to 12
- Long handles
- Canvas roll-up holder
Pros
- Only set here with natural hog bristle
- Long handles for easel painting
- Lowest price tier among the full sets
Cons and limitations
- Only rounds and flats; no filberts or brights
- Budget hog bristle may shed more than premium brands
Buying consideration: an excellent companion to the Onyx set, adding bristle and smaller sizes.
3. Nicpro 30pcs Paint Brush Set — Best for Shape Variety
Nicpro’s listing is unusually specific about contents: eight flats, six rounds, six filberts, three angles, three fans, two daggers, one cat’s tongue and one liner, plus a paint spatula, in a nylon roll bag. That covers almost every shape an oil painter reaches for, in a run of sizes.
The bristles are nylon, described as elastic with good shape retention. Soft-to-medium nylon is better for smooth blending and glazing in oil than for heavy impasto.
Best suited for: painters who want to explore shapes, especially filberts and angles, without buying them one by one.
Key features
- 29 brushes in eight shapes plus a spatula
- Six filberts in sizes 2 to 14
- Nylon bristles, birch handles
- Nylon roll storage bag
Pros
- Most complete shape list here
- Filberts fill the Onyx set’s main gap
- Includes a liner for fine lines
Cons and limitations
- Nylon may be too soft for very thick oil paint
- Handle length not specified
Buying consideration: choose this if you want variety and paint mostly with medium-bodied oil.
4. Fuumuui 25pcs Paint Brush Set — Best for Specialty Shapes
Fuumuui’s 25-piece set packs 24 synthetic brushes in nine shapes (large wide flat, flat, filbert, fan, dagger, cat tongue, round, angle and rigger), a palette knife and a waterproof roll. Double-crimped copper ferrules and birch handles round out the listing.
The large wide flat is useful for toning a canvas and laying broad backgrounds, a job the Onyx flat is too small for. The rigger gives you long, thin lines for branches and rigging.
Best suited for: painters wanting specialty shapes plus a palette knife in one purchase.
Key features
- 24 synthetic brushes in nine shapes
- Palette knife included
- Double-crimped copper ferrules
- Waterproof canvas roll
Pros
- Large wide flat for toning and backgrounds
- Rigger and dagger for linework
- Protective roll case
Cons and limitations
- No natural bristle
- Specialty shapes may be unused by some painters
Buying consideration: a strong one-box kit if you are starting from zero.
5. Fuumuui 26pcs Professional Paint Brush Set — Best for Landscape Painters
The 26-piece Fuumuui set is pitched at landscape painting across acrylic, oil, watercolor and gouache. The listing describes soft synthetic bristles with good load capacity and shape retention, and hand-crafted double-crimped copper ferrules pressed firmly into the handles so they do not loosen.
The emphasis on soft bristles makes it better for blending skies and soft transitions in oil than for heavy textured paint.
Best suited for: landscape painters who blend a lot and want a broad synthetic set.
Key features
- 26 synthetic nylon brushes in multiple shapes
- Double-crimped copper ferrules
- Fine point bristle type per the listing
Pros
- Good for soft blending and glazing
- Ferrule construction emphasized in the listing
Cons and limitations
- Exact shape and size breakdown not in the listing data we checked
- Soft bristles are less suited to impasto
Buying consideration: pair with stiffer brushes like the Onyx set for structure.
6. GACDR Grainer Brush Set — Best Texture Add-On
Comb or grainer brushes have split synthetic hair that makes several parallel marks at once. GACDR’s set includes four in 1/4, 3/8, 1/2 and 5/8 inch, with Korean nylon (Toray) hair, seamless silver ferrules and black birch handles. The listing names oil as a compatible medium alongside acrylic, watercolor and gouache.
For oil landscapes and animal painting, a grainer quickly suggests grass, fur, feathers and wood grain.
Best suited for: painters adding texture tools to a core set.
Key features
- Four comb brushes, 1/4 to 5/8 inch
- Split synthetic nylon hair
- Seamless ferrules, birch handles
Pros
- Very low price tier
- Fast texture effects
Cons and limitations
- Single-purpose tool
- Marks can look repetitive if overused
Buying consideration: a cheap, useful extra once your main brushes are sorted.
Building an Oil Kit Around the Onyx Set
A sensible oil painting kit needs brushes for four jobs: toning and big block-in, building forms, edges and transitions, and final detail. The Onyx trio covers the middle two. Add a large flat or wide brush for toning (the Fuumuui 25 has one), a couple of filberts for softened edges (Nicpro has six), and a small round or liner for detail. If you like thick, textured paint, include a few hog bristle brushes from the U.S. Art Supply set.
That combination costs less than many premium single brushes and gives you a full, deliberate kit rather than a pile of near-duplicates.
Matching Brush Shape to the Stroke
Knowing what each shape does helps you decide which gaps matter. A round makes lines that swell and taper with pressure, and handles shapes and contours. A flat lays crisp planes, hard edges and broad strokes, and turned on edge it cuts thin lines. A bright is a short flat that gives more control with stiff paint. A filbert is a flat with a rounded tip that softens edges, making it a favorite for portraits, clouds and organic forms.
Beyond those, a fan blends and suggests foliage, a rigger or liner pulls long thin lines, and a dagger or angle handles sharp corners and calligraphic marks. The Onyx set gives you rounds and a flat; most oil painters add filberts first and a liner second.
Buying Guide: How to Choose a Jackson’s Oil Painting Brush or Alternative
Choose stiffness for your paint consistency
Thick, straight-from-the-tube oil needs stiff synthetics or hog bristle. Paint thinned with medium works well with softer synthetics. Most painters need some of each.
Prioritize the four essential shapes
Rounds, flats, filberts and brights cover nearly all oil painting. Fans, daggers and riggers are useful additions. Make sure your kit has at least one filbert, the shape many oil painters use most.
Pick long handles for easel work
Long handles let you paint at arm’s length and see the whole canvas. Short handles suit small panels and close detail.
Buy larger than you think
Beginners often buy brushes that are too small, which leads to fussy paintings. Start with sizes 8 to 12 and a 3/4- to 1-inch flat for most of the work.
Consider cleaning
Synthetics clean more easily and survive solvents and soap well. Hog bristle is durable but benefits from thorough cleaning and occasional conditioning.
Check ferrules
Double-crimped or seamless ferrules resist loosening. Loose ferrules are the most common failure in budget sets.
Practice With Your Brushes
Once you have rounds in hand, a simple control exercise is painting even dots with a round brush. For linework, try our guide on using a liner brush for fine detail, and use our brush size guide for detail work to decide which small brush to add to the Onyx trio.
Common Mistakes to Avoid
- Using only small brushes, which leads to overworked, fussy paintings.
- Leaving oil paint to dry in the ferrule; clean at the end of every session.
- Soaking brushes head-down in solvent jars, which bends the hair permanently.
- Using soft watercolor brushes for thick oil paint.
- Buying a huge set and never adding the filberts you actually need.
- Pouring used solvent down the drain instead of letting pigment settle and reusing the clear solvent.
FAQs
Are Jackson’s Onyx brushes good for oil painting?
Jackson’s lists the Onyx brushes as stiff, springy synthetics ideal for acrylic and oil. Those are the right characteristics for oil, though the set of three covers only mid-to-large rounds and one flat.
Should I use synthetic or hog bristle brushes for oil?
Both work. Hog bristle is traditional for thick, textured paint; stiff synthetics clean more easily and suit painters who also use acrylic. Many oil painters keep both types.
What brush sizes do I need to start oil painting?
A practical start is a few rounds and filberts in sizes 4 to 12, a 3/4- to 1-inch flat, and one small round or liner for detail.
Can I use the same brushes for oil and acrylic?
You can with synthetics, but clean thoroughly between media. Many painters keep separate brushes to avoid residue problems.
How do I clean oil painting brushes?
Wipe excess paint, rinse in odorless mineral spirits or a safflower oil, then wash with soap and water, reshape and dry flat or head-up.
Are long-handled brushes necessary for oil?
Not strictly, but they help when painting at an easel by letting you work at a distance and keep a looser grip.
Final Recommendation
The Jackson’s Onyx Synthetic Set of 3 is a well-chosen core for oil painting: firm, springy synthetics in the sizes that carry most of a painting. On its own it is incomplete, so treat it as the center of a kit rather than the whole thing.
Add the U.S. Art Supply 24-piece for hog bristle and long handles, the Nicpro 30-piece for filberts and shape variety, or the Fuumuui 25-piece for a wide flat, rigger and palette knife. Landscape painters who blend a lot will like the softer Fuumuui 26-piece, and the GACDR grainers are a cheap texture bonus. Build around your paint consistency, and the right combination becomes clear.
