How can I preserve paint brushes to ensure their longevity and optimal performance?

To preserve paint brushes for longevity and optimal performance, clean them thoroughly after each use with soap and water or a brush cleaner. Store them upright or flat in a well-ventilated area to prevent bending or damage to the bristles. Avoid leaving brushes in water or solvents for extended periods, as this can damage the bristles. Additionally, reshape the bristles while they are still wet and store them in a protective case or container to prevent dust and damage.