How should brushes be cleaned and stored to make them last?
Clean with a mild soap and lukewarm water, work the lather into the base of the hair, rinse, reshape the tip and dry it hanging tip-down. Never stand a brush in water or leave solvent in the hair. Drying tip-down is the single change that most extends brush life.
Cleaning
Work mild soap into the hair from the ferrule outward, not just at the tip, because pigment collects at the base where the hair meets the ferrule. Rinse until the water runs clear. For oil paint, follow the solvent with soap; solvent alone leaves residue that hardens at the base.
Drying
Reshape the tip and dry the brush hanging tip-down, or lay it flat with the head over an edge. Water sitting in the ferrule softens the glue line and eventually loosens the hair. A brush standing tip-up in a jar lets water run down into the ferrule, which is the most common way a brush is ruined.
Storage and lifespan
Store dry, tip-up or flat, away from direct sun. A well-cared-for artist brush can last years because the hair, ferrule and handle wear slowly. Nail brushes face solvent and heavy use, so their realistic life is measured in months, which is why salons buy them in multiples.
Common questions
Should I use conditioner on brush hair?
A small amount of hair conditioner restores softness on natural hair. Rinse it out fully; residue affects how the brush loads paint.
How often should a nail brush be replaced?
When it stops returning to a point or starts shedding. In a busy salon that is typically a matter of months, depending on solvent exposure.