Watercolor is a medium where your materials are active participants in the creative process, not just tools. The paper you choose, the brushes you use, and the properties of your paints directly influence what techniques you can perform and how well they work. A technique that produces beautiful results on cotton paper might fail completely on cellulose. A brush that excels at washes might struggle with detail work.
This guide matches specific materials to specific techniques, so you can make informed choices whether you are buying new supplies or selecting from what you already own. Every technique has an ideal material setup, and knowing what that is saves you frustration and wasted paper.
The wet-on-wet technique involves applying paint to damp paper, creating soft, flowing edges and beautiful colour blends. It is the most demanding technique in terms of material quality.
Cotton paper is essential for serious wet-on-wet work. Cotton fibres hold moisture significantly longer than cellulose, giving you a much wider working window before the paper dries. This extra time is the difference between achieving smooth, controlled blends and fighting against rapidly drying paper.
Weight matters enormously. 300gsm paper absorbs more water without buckling, which is critical since wet-on-wet involves a lot of moisture. On 200gsm or lighter paper, heavy wet-on-wet application causes severe warping that disrupts paint flow.
Cold press texture is the most versatile choice for wet-on-wet. The slight surface texture helps hold moisture evenly while allowing paint to flow smoothly. Hot press works for wet-on-wet but can be harder to control because paint moves very freely on the smooth surface.
Recommended: Baohong Academy Cold Press – 100% cotton at an accessible price point.
Large round brushes (size 12 to 16) and mop brushes work best for wet-on-wet because they hold large volumes of water and paint. Natural hair brushes, particularly squirrel, hold the most water. The Artsecret squirrel hair wash brush is exceptional for large wet-on-wet washes because of its enormous water-holding capacity.
Use transparent pigments for the most luminous wet-on-wet results. Granulating pigments create especially beautiful effects when they settle into damp paper, producing natural texture variations. Tube paints are generally preferable because you can mix larger quantities of fluid paint quickly.
The wet-on-dry technique applies paint to completely dry paper, producing crisp, defined edges. Material requirements are more forgiving than wet-on-wet.
Both cotton and cellulose paper work well for wet-on-dry, since you are not relying on the paper to stay wet. Even 200gsm paper can handle wet-on-dry if you are not applying excessive water. Cold press gives the most satisfying results, with its texture providing a subtle tooth that enriches the brush marks.
Medium round brushes (size 6 to 10) give the most control for wet-on-dry work. You want a brush that comes to a fine point for detailed edges but holds enough paint for continuous strokes. Synthetic or blended brushes with good spring work very well here because the snap-back quality helps maintain precise edges.
Any paint type works for wet-on-dry. Both pans and tubes perform equally well since you are applying controlled amounts of paint to a dry surface.
The flat wash requires applying an even, uniform layer of colour across an area. It is more technically demanding than it sounds.
Cotton paper at 300gsm is strongly recommended. The even moisture absorption of cotton produces a more uniform wash compared to cellulose, which can create streaky, uneven results. Cold press is good. Hot press is excellent for flat washes because the smooth surface allows the brush to glide evenly without catching on texture bumps.
Large flat brushes or large round brushes (size 14+) are ideal. A flat brush covers more area per stroke, making it easier to overlap wet edges before they dry. The shape of your brush directly impacts wash quality since wider brushes mean fewer strokes and fewer chances for streaking.
Tube paints are preferable because you need to pre-mix a generous quantity of consistent colour before starting. Running out of paint mid-wash is the most common cause of uneven flat washes. Squeeze out enough paint, mix thoroughly, and have more than you think you need.
The gradient wash transitions smoothly from one colour or value to another. Material needs are nearly identical to flat washes with some specific differences.
Cotton, 300gsm, cold or hot press. The extended wet time of cotton paper gives you more time to blend the gradient smoothly and correct any unevenness before the paper dries.
Same as flat washes: large flat or large round. A natural hair brush that holds maximum water helps maintain the wet edge across the gradient zone.
Glazing builds translucent layers of colour, each applied over the previous dried layer. This technique demands specific material properties.
Cotton paper is strongly recommended because it withstands multiple wet layers without surface breakdown. Cellulose paper begins to pill and deteriorate after three or four glazing layers. Paper with strong internal sizing performs best because the sizing prevents each new layer from absorbing too deeply and disturbing the layers beneath.
300gsm is essential for serious glazing work since the paper needs to handle repeated wetting and drying cycles.
Soft-haired brushes are critical for glazing. The brush must glide over the dried layer below without scrubbing and disturbing it. A medium round with soft natural hair or a soft synthetic alternative works best. Stiff brushes risk lifting previous layers instead of painting over them.
Transparent pigments are mandatory for effective glazing. Semi-opaque and opaque pigments block the layers beneath rather than allowing them to glow through. Check the transparency rating of your pigments before glazing. Also avoid staining pigments in lower layers if you want the option to make corrections.
The dry brush technique drags slightly loaded brush across paper to create broken, textured marks. Material choice is critical for this technique.
Rough paper or cold press paper with pronounced texture is essential. Paper texture creates the dry brush effect – the brush catches on raised fibres and skips across valleys. Hot press paper produces very weak dry brush effects because there is no texture for the brush to catch on.
The Potentate 300gsm rough cotton paper is excellent for dry brush work because its bold texture produces dramatic effects.
Flat brushes and fan brushes create the widest dry brush effects. Stiff synthetic brushes work well because they maintain their shape against the textured paper without bending excessively. Choose a brush size that matches the scale of texture you want.
Tube paints at a thick consistency work better than dilute pan colours for dry brush. The paint should be heavily loaded on the brush with minimal water. Opaque and granulating pigments can actually enhance dry brush effects by creating varied, textured deposits.
The lifting technique removes paint from the paper to create highlights or correct mistakes. Material properties dramatically affect how well lifting works.
Cotton paper with strong sizing lifts cleanly because pigment sits on the surface rather than sinking into fibres. Cellulose paper absorbs pigment more deeply, making lifting difficult. Hot press and cold press both work, but hot press lifts more cleanly due to its smoother surface.
A clean, slightly stiff damp brush works best for lifting. Synthetic brushes are preferable because their stiffness helps scrub pigment from the paper surface. A flat brush gives more controlled lifting across defined areas.
Non-staining pigments lift easily. Staining pigments (phthalo colours, Winsor colours, Alizarin Crimson) bond to paper fibres and resist lifting. Check pigment properties before starting a painting where you plan to use lifting. Understanding pigment properties helps you plan which colours can be lifted and which cannot.
Here is a summary to guide your material choices:
If you are starting out, you do not need every material listed above. A good cotton cold press paper at 300gsm handles all techniques reasonably well. A medium round brush and a large round cover most needs. And a quality student-grade paint set with a range of transparent and opaque pigments lets you explore every technique in this guide.
As you discover which techniques you enjoy most, you can invest in the specific materials that enhance those techniques. The painter who loves wet-on-wet might invest in premium squirrel hair brushes. The one who loves dry brush might invest in rough-textured paper. Let your artistic preferences guide your material purchases, and your results will improve with every upgrade.
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