Derwent Water Brushes (Set of 4) Review: A Thoughtfully Redesigned Travel Brush

Introduction

Water brushes are one of those quietly practical tools that most watercolor artists eventually end up owning. They carry water in the handle, which means no cup or jar to bring along, and they let you sketch and paint quickly on the go. Derwent’s current set of four water brushes is the company’s most refined take on the category yet, combining qualities from earlier water brush designs into one cohesive set.

For anyone new to watercolor, the appeal is simple: a water brush holds its own water supply in the barrel, so you can activate paint, clean the bristles, and keep painting without ever dipping into a separate water container. That makes them ideal for quick sketches outdoors that you later use as reference for studio work.

What’s in the Set

This is a pack of four brushes, and while you can buy some of them individually, the set covers the full practical range. You get a 2mm fine tip, a 3mm medium round tip, a 4mm large round tip, and a 10mm chisel tip for broad washes.

Each brush has a protective cap, though the caps fit loosely when posted on the back of the barrel. The shape is worth noting: there is a thin neck where you grip, which then bevels out into a wider section that rests comfortably where a pen would sit in your hand. The barrels also hold a significant amount of water, which matters on longer painting sessions.

The bristles are nylon and genuinely soft. They are not the equivalent of a premium sable studio brush, but they hold water and pigment very well and deliver clean, controlled marks.

Filling and Water Control

The standout feature is the push-button mechanism on both sides of the barrel. Press it and water is released in a controlled flow rather than a sudden gush; an internal regulator slows the delivery so you are never fighting an unexpected flood.

Filling is equally well sorted. Where many water brushes, including older Pentel and Derwent designs, have a small fill neck that traps air bubbles and overflows, these have a noticeably wide opening. You fill them fast and you are ready to go, with none of the usual fiddling.

The barrel splits at the push button, so you simply twist it apart to fill. It is a small design detail, but it removes the most annoying part of using most water brushes.

Mark-Making and Line Variation

In use, the four tips cover almost everything a portable sketch demands. The 10mm chisel brush handles broad washes like skies; the 4mm and 3mm round brushes give strong full-width strokes plus finer detail lines; and the 2mm tip handles delicate work.

Cleaning between colors is quick: press the button, let water run through the bristles, and blot on a tissue until it runs clear. Like any brush they will stain slightly over time, but as long as the water runs clear on the paper before your next color, you are fine.

Who These Brushes Are For

If you like to sketch outdoors, whether walking the dog or riding out with a small A6 watercolor pad, a compact pan set, and a couple of these brushes, you have a complete portable painting kit. The brushes are well balanced and weighted, especially filled with water, and they feel more like using a pen or marker than a traditional brush, which makes detailed work easier.

There is a bonus tip for colored pencil artists: fill a water brush with odorless mineral spirits and you have a dedicated blending brush for pencil layers, ready whenever you need it.

Things to Consider Before Buying

The loose-fitting caps are a minor annoyance if you like posting caps while working. And if you rarely paint washes, you may find the 10mm chisel brush sits unused; in that case buying just the round-tip brushes individually could make more sense. If you think you will do skies or larger washes, the full set is the better call.

Buying Advice

Of all the water brushes tried, this Derwent set is the standout. The wide fill opening, the two-sided push-button flow control, generous water capacity, and soft, well-behaved nylon bristles add up to a set that simply gets out of your way. For the current price and availability of the set of four or individual brushes, check the product listing linked below.

Conclusion

Derwent has taken the strengths of earlier water brush designs and folded them into one well-executed set. If you paint on location, blend colored pencils with mineral spirits, or just want dependable water brushes with excellent flow control, this set is an easy recommendation.