How to Prepare and Care for Sumi-e Brushes
A well-cared-for Sumi-e brush can last for many years. Traditional brushes are usually made with natural hair, which allows them to hold ink, form a fine point and create the expressive strokes used in Japanese ink painting.
Correct preparation, gentle cleaning and proper drying will help your brushes retain their shape and perform beautifully.
Preparing a New Sumi-e Brush
New Sumi-e brushes are usually supplied with the hairs stiffened with a protective starch or glue. This keeps the brush point intact during transport and storage.
Do not use the brush while the hairs are still stiff.
1. Wet the Brush Hairs
Place the brush hairs into clean, cool or lukewarm water. Wet only the hairs and avoid immersing the wooden handle.
Allow the water to soften the outer layer of starch for a minute or two.
2. Gently Loosen the Hairs
Using clean fingers, gently massage the hairs from the base of the brush towards the tip.
Do not pull, twist or force the hairs apart. Continue wetting and gently loosening the brush until the hairs feel completely soft and flexible.
3. Rinse Thoroughly
Rinse the brush in fresh water until the water remains clear and no starch residue remains.
Gently shape the brush into a point with your fingers. The brush is now ready to use.
Using Your Brush
Before loading the brush with ink or colour, wet the hairs thoroughly and gently remove the excess water.
This helps the brush absorb ink evenly and prevents pigment from becoming trapped deep within the hairs.
- Keep the brush damp while painting.
- Rinse the brush when changing colours or ink tones.
- Lay the brush flat if you pause while working.
- Never leave the brush standing in a container of water.
Leaving a brush standing in water can bend the tip, damage the hairs and loosen the adhesive inside the handle.
Cleaning Sumi Ink from Your Brush
Clean your brush as soon as possible after painting. Dried ink can make the hairs stiff and shorten the life of the brush.
- Rinse the brush in clean, cool or lukewarm water.
- Gently move the hairs through the water without pressing the brush against the bottom of the container.
- Use your fingers to gently squeeze water from the base of the hairs towards the tip.
- Repeat with fresh water until the water runs clear.
A small amount of staining may remain on pale natural hairs. This is normal and does not mean the brush is still dirty.
Cleaning Other Painting Mediums
Watercolour
Rinse thoroughly in clean water until all visible colour has been removed.
Acrylic Ink or Acrylic Paint
Clean the brush immediately. Acrylic products become water-resistant when dry and can permanently damage a natural-hair brush.
Use lukewarm water and a small amount of gentle brush soap if necessary. Avoid harsh detergents and household cleaners.
Sumi-e brushes are best reserved for ink and watercolour. Using a separate brush for acrylic products will help protect your traditional brushes.
Drying Your Brush
- Gently remove excess water with a soft cloth or paper towel.
- Use your fingers to reshape the hairs into a smooth point.
- Hang the brush with the hairs pointing downward, or lay it flat in a well-ventilated area.
- Allow the brush to dry completely before storing it.
Do not dry the brush standing upright while it is wet. Water can travel into the handle and weaken the adhesive holding the hairs in place.
Keep wet brushes away from direct sunlight, heaters and hair dryers. Excess heat can damage both the hairs and the handle.
Storing Sumi-e Brushes
Once completely dry, store your brushes hanging or lying flat where the tips will not be crushed.
- Keep brushes in a clean, dry and well-ventilated place.
- Protect the hairs from dust and insects.
- Do not store a damp brush in a sealed container.
- Do not allow other tools to press against the brush point.
Some brushes are supplied with a clear plastic protective cap. These caps are designed mainly to protect the brush during transport.
Replacing a tight plastic cap can trap moisture, bend the hairs or catch and pull them. It is usually better to store a dry brush hanging or lying flat without the cap.
Restoring the Brush Point
Natural-hair brushes may look slightly untidy when dry. This does not necessarily mean the brush has lost its shape.
- Wet the brush thoroughly.
- Gently smooth the hairs between your fingers.
- Shape the brush into a point.
- Allow it to dry naturally.
If several hairs extend beyond the main brush point, do not immediately cut them. These longer hairs may be part of the brush's original structure and can help it form expressive strokes.
Common Brush-Care Mistakes
- Leaving the brush standing in water.
- Soaking the wooden handle.
- Using very hot water.
- Pulling or twisting the hairs.
- Scrubbing the brush against the bottom of a container.
- Allowing ink or acrylic paint to dry in the brush.
- Using harsh soap or detergent.
- Storing the brush while it is still damp.
- Crushing the point inside a box, drawer or pencil case.
Quick Brush-Care Checklist
- Soften and rinse a new brush before first use.
- Wet the brush before loading it with ink.
- Never leave the brush standing in water.
- Clean it thoroughly after every painting session.
- Reshape the point while the brush is damp.
- Dry the brush hanging downward or lying flat.
- Store it only when completely dry.
A Final Thought
In Sumi-e painting, caring for the tools is part of the artistic practice. Cleaning and reshaping the brush encourages patience, attention and respect for the materials.
Treat your brush gently and it will reward you with fluid lines, fine points and expressive brushstrokes for many years.