Home / Art Creators' Hub / Watercolor Brush Pens / How to Use Watercolor Brush Pens

Tutorial

How to Use Watercolor Brush Pens

Q: How much pressure should you actually press a watercolor brush pen tip?

Roughly 70 percent of strokes should be at medium pressure — half to two-thirds of the bristle length touching paper, producing a 4 to 6 mm wide line. Use light pressure (just the tip touching) for fine detail, outlining, and calligraphy upstrokes — about 20 percent of strokes. Reserve heavy pressure (full bristle engagement, 8 to 10 mm line) for solid fills only — about 10 percent of strokes. Heavy pressure is the most damaging to the brush over time, so don't use it as a default. The cue for medium pressure is visual: the line is wide enough to read clearly from across a desk but not yet bleeding outside its intended path.

Five foundational tips for using watercolor brush pens — from swatching the box to controlling pressure on the page. The five moves every artist makes before any project, whether you're searching how to use watercolor brush pens for beginners or watercolor brush pens how to use.

Chalkola Tutorial Updated April 2026 Read time 14 min 5 fundamentals

Watercolor brush pens are intuitive and easy to use. With just a little practice, you'll get the hang of them in no time! Here are a few tips to help you get started. However you phrase it — how to use a watercolor brush pen, how to use watercolor pens, or watercolor pens how to use — the five fundamentals below are the same.

In this tutorial

Tip 1 — Swatch your full set in 5 minutes
Tip 2 — Master your water brush before your color brushes
Tip 3 — Match paper to project, not opposite
Tip 4 — Three blend methods, when to use each
Tip 5 — Pressure is the only variable that matters
Three things that go wrong on day one
How to clean and store after use
Watch a complete first-session in 4 minutes
Where to go after your first project
Tutorial questions

Tip 1 of 5

Tip 1 — Swatch your full set in 5 minutes

A complete 28-color swatch sheet — every color labeled and a decorative motif painted in each shade.

What's more exciting than buying new brush pens? Swatching them! This lets you see the actual colors and how they perform on different textures and weights of paper. Take it to the next level by dipping the brushes in water — this will dilute the ink and give you even more shades to play with.

Why swatching matters before any project

The printed cap color is a guess, not a measurement. Cap printing is a CMYK approximation of a multi-component water-based formula — what shows on plastic differs from what lays down on paper by 10–30% in saturation, hue, or warmth. Skipping swatching is the single biggest reason beginners reach for the wrong color mid-project.

A swatch sheet is also a teaching tool — the first time you swatch, you learn the real personalities of every pen in your set, none of which is visible on the cap.

The 5-minute swatching workflow

Use one sheet of 300gsm cold-press paper. Draw a light pencil grid of 28 boxes (4 columns by 7 rows for a 28-set).
Two strokes per pen. One full-saturation stroke at full pressure, one diluted stroke after dampening bristles with a clean water brush.
Why both matter. The diluted stroke shows the lightest tint each pen can produce — what you'll actually use 70% of the time in real artwork (washes, skin shadows, atmospheric backgrounds).
Label every pair. Use the pen's actual name from the cap, not a guess. "Lemon Yellow" works forever; "kinda green-yellow" forces you to re-test every time.
Note the swatch date. Water-based pigments shift 2–3% in saturation over a year — a dated swatch tells you whether the pen still matches.

Where to keep your swatch sheet

Tape it inside the storage box lid, or clip it to the inside flap of your sketchbook. Swatch sheets stored in a drawer get forgotten by week two; swatch sheets attached to the box get consulted every session.

Pro move: swatch on the actual paper you'll paint on

If you usually paint on hot-press for portraits, swatch on hot-press. If you usually paint on cold-press for landscapes, swatch on cold-press. Same pen, two papers, two visibly different colors.

Tip 2 of 5

Tip 2 — Master your water brush before your color brushes

A water brush turning solid pen pigment into a soft gradient — the same color the pen lays down, now blended into a wash.

Water brushes work just like a traditional brush, except they have a reservoir inside that you can fill with water. You can use them to blend colors that you've already applied or mix two different colors on a palette. Moving onto a different shade? Blot the water brush onto a scrap piece of paper to make sure that it's clean and free of color.

The 3 things a water brush does

Blend on paper. Lay a stroke of pen color, follow immediately with the water brush — pigment moves and lightens. The fastest way to make a 1-color wash.
Mix on a palette. Rub pen tips onto a non-absorbent surface (storage-box lid works), pick up pigment with the water brush, mix, paint. The only way to build custom colors not in your set.
Dilute a tip. Brush wet bristles onto a pen tip to soften the loaded ink — produces a paler, more transparent stroke. Useful for skin tones and atmospheric edges.

Distilled vs tap water

Tap water carries 100–400 ppm of dissolved minerals (calcium, magnesium, chloride). When a wash dries, those minerals deposit as faint white spots — invisible on swatches but obvious on a finished 9×12 piece in good light. There's no fix once dried in. Distilled water (or filtered) eliminates it; a 1-gallon jug costs under $2 and lasts 2–3 months.

Why blotting between colors matters

The water brush picks up pigment every time it touches a wet stroke. Carry that residue forward and the next "clean blue wash" is actually a tinted blue. This is the #1 reason beginner work goes muddy. Press the wet bristles into a folded paper towel between every color change — 1.5 seconds, saves the whole painting.

Pro tip: refill at 50%, not at empty

Refilling a bone-dry reservoir takes 30 seconds longer because bristles must re-hydrate before water flows. Top up when strokes start coming out drier than expected — you'll never lose the rhythm of a session.

First-time water brush hack

Before you use a brand-new water brush for the first time, fill it with distilled water and squeeze gently for 10 seconds onto a paper towel. This flushes manufacturing residue out of the bristles — without it you may see micro-bubbles or faint cloudiness on your first wash.

30 sec

Setup time before your first stroke

300 gsm

Paper weight that works for beginners

60 sec

Typical drying time between layers

12–24 mo

Nib lifespan with daily use

Tip 3 of 5

Tip 3 — Match paper to project, not opposite

The Chalkola Watercolor Pad — 300 gsm cold-press, the right weight for watercolor brush pens. Sugar skull illustration shows the paper holds layered washes without buckling.

Using office paper may seem like a good idea, but only if you're sketching or testing colors out. For watercolor brush pens (and watercolor painting in general), you want to use thick paper that won't buckle or warp. For beginners, 300 gsm is ideal — but if you do plenty of layers and washes, you'll want to go with something heavier.

Paper weight chart

Weight	Use case	What happens with watercolor
90 gsm	Sketching, color testing only	Buckles immediately on contact with water; ink seeps through to next page.
130 gsm	Light wash, single layer	Holds up for one quick pass; second layer warps the sheet.
200 gsm	Moderate use, 1–2 layers	Stable for most brush-pen work; tight detail pieces are fine.
300 gsm cold-press	Best beginner default. Most projects. Chalkola pad spec.	Holds 3–4 layers, blends cleanly, dries flat. The standard.
400 gsm+	Heavy layering, wet-on-wet, finished pieces	Effectively unkillable. Holds wet washes indefinitely without buckling.

The single most useful number from this table is 300 gsm cold-press — the entry point at which paper stops being a limitation. Below it fights you; above it is a luxury you don't need until you're regularly painting wet-on-wet.

Cold-press vs hot-press: what changes

Cold-press (textured). Slight tooth across the surface; ink settles into valleys, tops dry lighter — organic, painterly look. Best for landscapes, florals, beginner work.
Hot-press (smooth). Flat surface; ink lays down evenly with sharp edges. Best for portraits, fine detail, pen-and-ink illustration.
Rough. Maximum tooth, maximum texture — hardest to control with a brush pen. Skip for the first few months.

The Chalkola Watercolor Pad spec

The 28-color set ships with a 15-sheet pad: 300 gsm (200 lb), cold-press, acid-free, deliberately matched to the pens. Paint your first 3–5 projects on it to lock in the pen-paper baseline before substituting. See the full set spec.

Pro tip: tape, don't fight

If your sheet buckles mid-project, tape all four edges to a flat board (painter's tape), let it dry under tape for 10 minutes, then continue. The tape restrains further warping. Remove only after the final layer is fully dry. Don't fight thin paper — no technique saves it.

Tip 4 of 5

Tip 4 — Three blend methods, when to use each

Two pen colors meeting on the page and blending with a water brush — the cleanest way to build a 2-color gradient.

There are many ways to blend colors with watercolor brush pens. You can (1) paint directly on the paper and blend with a water brush; (2) rub paint onto a palette and mix with a clean brush, or (3) touch the tips of two markers together for a gradient effect. Each method has its pros, so try them all out to find what works best for your project!

Three methods, side by side

Method	When to use	Best result
1. Paint then blend	Speed-priority sketches, journal entries, soft gradients (skies, water, skin)	Natural, organic blend — pigments push each other through paper fibers.
2. Palette mix	Custom colors not in your set, reference-matching, repeating the same mix	Maximum control — you see the exact mix before it touches paper.
3. Tip-touch	2-color gradients in a single stroke, lettering, leaves, petals, feathers	Built-in gradient inside one stroke — no second tool, no second pass.

Method 1 — Paint then blend (paper-as-palette)

Lay two pen colors side by side with a thin gap. Within 10 seconds — while both are wet — drag a clean, damp water brush from one color into the other and back. The pigments meet and form a soft transition.

Pros: Fastest method. No palette needed. Naturally varied blend zone.
Cons: Less control over the midpoint hue. A stronger pigment will dominate the blend zone.

Method 2 — Palette mix (predict before paint)

Rub two pen tips onto a non-absorbent palette (storage-box lid works). Pick up both pigments with a clean water brush, mix on the palette until you see the target color, then paint.

Pros: Maximum control. Builds colors your set doesn't include — pink + yellow = peach, blue + red = violet, brown + yellow = gold-ochre.
Cons: Slowest method. Wet pigment on palette reads more saturated than dry pigment on paper — mix slightly stronger than your target.

Method 3 — Tip-touch (two pens kissing tips)

Press pen A's tip into pen B's tip for 2–3 seconds; pen B picks up some of A's ink. Paint with pen B — the first stroke is the picked-up color, then B's own color as the borrowed ink runs out.

Pros: Gradient inside a single stroke. Extremely fast for repetitive elements (lettering, leaves, petals).
Cons: Can leave residue on the receiving tip for 5–10 strokes. Only works between closely-related colors — never touch a dark to a pale tip.

Don't combine all three in one stroke

Tip-touching two pens, laying them on paper, then dragging a water brush through is the beginner instinct — and the result is muddy. Too many pigments in too small an area, no time for paper to absorb each layer cleanly. Pick one method per stroke, then combine across a piece (e.g., Method 1 for the background, Method 3 for lettering on top).

Pressure is the only variable that decides whether your stroke looks like a hairline or a wide brush — not technique, not pen, not paper.

Tip 5 of 5

Tip 5 — Pressure is the only variable that matters

One pen, three pressure levels — light for thin lines, medium for general strokes, heavy for thick fills.

Watercolor markers can be used in many different ways to achieve specific effects. Use a light hand to create thin, dainty lines or add more pressure for a thicker stroke. You can also hold the brush at a near-horizontal angle. This lets you paint a bigger area at once, perfect for filling in large shapes or creating backgrounds.

Three pressure levels at a glance

Pressure	Stroke type	When to use
Light	Thin line, 1–2mm wide. Only the very tip touches paper.	Outlining, fine detail, calligraphy upstrokes, smallest petals or leaves. ~20% of strokes.
Medium	Medium line, 4–6mm wide. Half to two-thirds of bristles engage.	Default for most work — letters, leaves, petals, stripes. ~70% of strokes.
Heavy	Thick line, 8–10mm wide. Almost full bristle length engages and flexes.	Solid fills, large shapes, high-saturation backgrounds only. ~10% of strokes.

Hold the pen at roughly 45 degrees for tip work — the same angle you'd hold a regular pen. The exact pressure is something your hand learns in 20–30 minutes of practice; the visual cue for medium is when a line reads clearly from across a desk but doesn't bleed outside its path.

Near-horizontal angle — covering large areas

Lay the pen on its side, barrel almost parallel to the paper. One pass covers a 12–15mm stripe — the fastest way to fill a background, paint a sky, or lay down a base color. Trade-off: angle work uses more ink per second and can leave streaks. Smooth them with a damp water brush across the area while still wet.

The "pressure ladder" warm-up

Before any session, draw 5 strokes left-to-right across a scrap sheet:

Stroke 1 — Light: Thin line, just the tip.
Stroke 2 — Medium: Default thickness.
Stroke 3 — Heavy: Full bristle, thickest line.
Stroke 4 — Medium: Back down.
Stroke 5 — Light: Back to start.

This 30-second drill resets your hand's pressure range and tests the pen — fuzzy, splotchy, or discolored strokes flag a pen that needs cleaning or swapping before it shows up mid-piece.

Pro tip: light pressure preserves your nib

Heavy pressure on a fine-tipped brush pen accelerates nib fray — bristles take a permanent set after 3–6 months of daily heavy use, vs 12+ months at light/medium. Save heavy pressure only for the strokes that genuinely need it.

Don't equate pressure with color saturation

Heavy pressure does NOT make a color darker — it just makes the line thicker. Color saturation depends on pigment concentration, paper absorbency, and dilution. For a darker color, layer two passes (let dry between) or use less-diluted ink. Pressing harder spreads the same pigment over a wider area, often making the color look lighter, not darker.

First-day issues

Three things that go wrong on day one

Almost every beginner runs into one of three issues in their first session. None of them are defects — they're all fixable in under a minute once you know the cause.

If you do these, you're fine

Prime the pen 3–5 times on scrap before any project
Use 300gsm cold-press paper for any wet work
Blot the water brush between every color change
Wait 60 seconds between layers for clean overlaps
Cap pens immediately the moment you set them down

These are the day-one mistakes

Skipping the prime — pen "doesn't work" on first stroke
Using printer or 90gsm sketch paper — it warps in 30 seconds
Mixing colors without blotting — produces muddy brown-grey
Layering on a still-wet base — destroys clean edges
Leaving caps off "for a minute" — bristles stiffen at the tip

Brush won't release ink

You didn't prime. Most water-based pens ship with bristles slightly drier than fully-loaded so they don't leak in transit. Press firmly on scrap 3–5 times — each press pulls ink from the barrel. If still dry, shake the barrel for 5 seconds (cap on) and prime again.

Paper warped after one wash

Your paper is too thin. Switch to 300gsm or heavier — see the paper weight chart in Tip 3. The fix is the paper, not the technique. No brushwork will keep 90gsm flat under a wash.

Color came out muddy

Too many blends, too few tip-cleans. The water brush picked up pigment from the previous color and carried it forward. Press wet bristles onto a folded paper towel between every color change until the wet spot comes up clean. Mud is a contamination problem, not a pigment problem.

After the session

How to clean and store after use

Brush pens are largely maintenance-free, but a 60-second end-of-session habit extends their life by months. No cleaning solution, no rinse cycle, no special storage box required.

That's it. The pens are designed to be put away in 60 seconds and pulled out 6 weeks later in the exact same condition.

Visual reference

Watch a complete first-session in 4 minutes

If you'd rather see the five tips in action than read about them, this short tutorial walks through the same fundamentals — swatching, water brush use, paper choice, blending, and pressure variation — in a real artist's first-session pace.

Real artist using watercolor brush pens — note the swatching, water brush use, and pressure variation.

Next steps

Where to go after your first project

Once you've nailed the 5 fundamentals — swatching, water brush technique, paper selection, blending methods, and pressure control — pick your next move:

Want named techniques (wet-on-wet, gradient, masking)? See Fun Techniques to Try with Watercolor Brush Pens — 12 named techniques each building on the fundamentals you just learned.
Want project ideas to copy? See Get Inspired with These Watercolor Brush Pen Projects — finished examples with reference images and color combinations.
Want bullet journal use? See Best Bullet Journal Markers for use-case-specific gear and color picks.

Need a refresher on what watercolor brush pens actually are, how they compare to calligraphy brush pens, or the buyer's logic before committing to a set? Start at the silo pillar: Watercolor Brush Pens Hub.

Tutorial Q&A

Tutorial questions

How do you activate a brand-new watercolor brush pen on the very first use?

Out of the box, the bristles are slightly drier than fully-loaded so the pen doesn't leak in transit. To activate: shake the pen gently for 5 seconds (cap on) to redistribute pigment in the barrel, then uncap and press the brush firmly onto a scrap sheet of paper 3–5 times. Each press pulls ink from the reservoir into the bristles. After the third or fourth press you should see a steady, even color come through. If it's still patchy, repeat the press cycle once more — some sets ship drier than others. The activation is a one-time step. Once the pen is primed, every subsequent session starts immediately.

What's the right way to swatch a 28-color watercolor brush pen set?

Use one sheet of 300gsm cold-press paper. Lightly pencil a 4-column by 7-row grid of small boxes. For each pen, lay down two strokes inside its box: one full-saturation stroke at full pressure, and one diluted stroke where you've already touched the bristles with a damp water brush. Label each pair with the pen's name from the cap. The two strokes show you the pen's saturated color (used for accents) and its lightest tint (used for washes — about 70% of real-world use). Total time: 5 minutes for a 28-set. Tape the swatch sheet inside the storage box lid so you actually consult it during projects.

How much pressure should you actually press a watercolor brush pen tip?

Roughly 70% of strokes should be at medium pressure — half to two-thirds of the bristle length touching paper, producing a 4–6mm wide line. Use light pressure (just the tip touching) for fine detail, outlining, and calligraphy upstrokes — about 20% of strokes. Reserve heavy pressure (full bristle engagement, 8–10mm line) for solid fills only — about 10% of strokes. Heavy pressure is the most damaging to the brush over time, so don't use it as a default. The cue for medium pressure is visual: the line is wide enough to read clearly from across a desk but not yet bleeding outside its intended path.

Do you need to fill a water brush with distilled water or is tap fine?

Distilled is meaningfully better. Tap water in most regions contains 100–400 ppm of dissolved minerals (calcium, magnesium, chloride). When you blend a wash and let it dry, those minerals deposit on the paper as faint white spots — invisible on small swatches but very visible on a finished 9 by 12 inch piece in good light. There's no fix once it's dried in. A 1-gallon jug of distilled water costs under $2 and lasts most artists 2–3 months. Decant into a small squeeze bottle and refill the brush from there. Filtered or bottled spring water is an acceptable middle option. Tap straight from the faucet is fine for swatching and practice but not for finished work.

What paper weight is the absolute beginner default for watercolor brush pens?

300 gsm cold-press, full stop. This is the entry point at which paper stops being a limitation. It holds 3–4 layers of pigment, blends cleanly, and dries flat with no buckling for the vast majority of brush-pen work. Anything below 200 gsm will warp on contact with water. 90 gsm office paper is suitable only for color tests and rough sketches. 400 gsm and above is a luxury for heavy wet-on-wet work — useful eventually, not necessary at the start. The 28-color Watercolor Brush Pen set ships with a 15-sheet 300 gsm cold-press pad — paint your first 3–5 projects on the included pad to lock in the pen-paper relationship before substituting.

How do you fix a smudge on a wet watercolor brush pen layer?

Speed matters. While the layer is still wet (within 30 seconds of laying it down), a clean, damp water brush will lift most pigment back off the paper. Press the bristles into the smudge, drag once to absorb, blot the brush onto a paper towel, repeat. Each cycle removes about 30–40% of the pigment. Two or three cycles is usually enough to lift a smudge to barely visible. Once the layer has fully dried, lifting becomes much harder — water-based pigments bond into the paper fibers as they dry. At that point, your options narrow to either painting over the smudge with a darker color (hide it) or scraping with a craft knife (rough, leaves a visible mark). Lift while wet whenever possible.

How long should you wait between watercolor brush pen layers before adding the next?

Wait until the previous layer is fully dry to the touch — usually 1–3 minutes for a thin wash on 300gsm cold-press, longer for heavy applications. The visual cue: the surface should look matte (no wet sheen) when viewed at a low angle to the paper. If you add a second layer over a still-damp first layer, the two pigments will mix and bleed into each other, producing a soft, blurred edge instead of a clean overlap. That's sometimes what you want (wet-on-wet effects) and sometimes not (sharp detail layers). For control, wait. If you're in a hurry, hold the paper near a desk lamp for 30 seconds to accelerate drying.

Why is my watercolor brush pen not releasing any ink even after shaking?

Two likely causes. First, the pen wasn't primed — see the activation question above; press 3–5 times on scrap paper. Second, the bristles dried out from being left uncapped. Water-based brush tips harden at the very end after roughly 2–5 minutes of exposure to air. The fix: cap the pen, shake for 10 seconds, then dip the very tip of the bristles into a small puddle of distilled water for 5 seconds. The water rehydrates the bristles and ink should flow on the next 1–2 strokes. If the pen has been uncapped for hours and is fully dried at the tip, recovery is possible but partial — the first strokes will be patchy until fresh ink works through. Cap immediately at session end to prevent this entirely.

Should I clean a water brush between every color or only at session end?

Between every color, every time, no exceptions — this is the single most important habit for clean watercolor work. The water brush picks up pigment whenever it touches a wet stroke or a palette mix. Carry that residue into the next color and you contaminate it: the new clean color is actually a tinted version of itself. This is the #1 cause of muddy, brown-grey beginner work. The fix is dead simple: keep a folded paper towel beside your sketchbook, and every time you switch colors, press the wet bristles into the towel until the wet spot comes up clean. It takes 1.5 seconds per switch. The end-of-session cleanup is separate — pour out the reservoir water, air-dry overnight, store with the cap off.

How do you blot a water brush correctly without scrubbing the paper?

Blotting is a press, not a wipe. Fold a paper towel into quarters so you have a small, thick pad. Press the wet bristles straight down into the pad and lift straight up — don't drag, don't scrub. The pad absorbs the excess water and pigment in 1–1.5 seconds. Then move to the next clean spot on the pad for the next blot, so you don't re-pick-up the residue you just deposited. If you scrub instead of press, two things go wrong: the bristles fan out and lose their point (which makes the next stroke fuzzy), and you smear pigment across the towel without cleanly absorbing it. Press, lift, move to a clean spot. Repeat until the wet spot comes up clear.

Continue exploring

Continue exploring watercolor brush pens

The kit

Get the kit referenced in this tutorial

Chalkola 28-Color Watercolor Brush Pen Set

The set used throughout this tutorial: 28 vibrant water-based colors, 1 refillable water brush, and a 15-sheet 300gsm cold-press watercolor pad — everything from the 30-second checklist, in one box. Every tip and technique on this page was written against this exact kit.

Shop on Amazon Read the full product page

How to Use Watercolor Brush Pens

subscribe to receive special offers and new art ideas

Search our shop