After painting with watercolor, gently rinse out the paint, use an appropriate mild brush soap when needed, rinse thoroughly, reshape the damp head and let it dry before storage. First identify what was in the brush: a routine for watercolor is not a method for removing dried acrylic, masking fluid or an unknown coating.
A gentle end-of-session routine
- Remove loose paint. Rinse the brush head in clean water and gently release the color. Avoid pushing the point hard against the bottom of the container.
- Clean remaining deposits. Use a mild brush soap suited to the hair or synthetic fiber. Work gently, paying attention near the ferrule—the metal part that holds the head.
- Rinse out the soap. Continue until loose pigment and soap have been removed. Do not judge cleanliness only by whether the hair looks brand new.
- Blot and reshape. Use a soft cloth to take off excess water and return the damp head to its intended shape without pulling it.
- Air-dry before putting it away. Keep the head from being bent or crushed during drying and storage.
This sequence draws on da Vinci’s care guidance and Royal & Langnickel’s cleaning instructions. Both emphasize cleaning, reshaping and suitable drying; da Vinci warns against strongly degreasing soaps and direct heat.
Should brushes dry flat or upright?
Manufacturer guidance is not uniform. Canson recommends drying flat, then storing dry brushes with the head up. Royal & Langnickel permits flat drying or hanging with hairs down; da Vinci favors hanging head-down. The Winsor & Newton guide currently describes upright, head-up drying.
For a general setup without a dedicated hanger, use a flat drying position on a clean absorbent surface, with the head resting freely rather than folded under the handle. Follow any specific instructions supplied for your brush. Do not confuse upright storage of a completely dry brush with drying a wet one.
Is a stained brush still dirty?
A changed hair color and a deposit of paint are different observations. Winsor & Newton notes that minor staining can remain without affecting performance. Royal & Langnickel likewise distinguishes stained hair from a brush-care fault.
After the normal rinse, inspect for a stiff deposit or loose color that continues to transfer. If the only change is a tint in otherwise clean, flexible hair, avoid escalating to harsh scrubbing merely to restore the original color. If the head remains stiff or misshapen, identify the material and seek the maker’s advice before using a stronger cleaner.
What to avoid in an ordinary watercolor routine
- Leaving brushes immersed for an extended period: Royal & Langnickel warns that prolonged soaking can weaken the attachment.
- Using a radiator or other direct heat to speed drying: da Vinci warns it can damage the brush assembly.
- Putting a damp brush into crowded storage that bends the head.
- Treating every paint as watercolor. Dried acrylic requires a different assessment; this guide does not provide a solvent or restoration procedure.
Set up tomorrow’s first use
Give clean brushes a place where they can dry undisturbed. Once dry, store them so that other tools do not press on the heads. If a brush repeatedly behaves poorly, keep a note of the medium used, cleaning product and visible symptom; that makes a question to the manufacturer specific and answerable.
Using pencils with water also calls for this cleanup: see our first watercolor-pencil exercise. If the paint label says acrylic gouache, read the medium comparison before assuming the same dried-paint behavior.
Sources checked September 9, 2026. Research-based care guide. The drying recommendation is an editorial choice explained against the differing sources; no brush-restoration test was performed.