What is the best practice for cleaning brushes after using oil-based paints?

The best practice for cleaning brushes after using oil-based paints is to use mineral spirits or paint thinner. Oil-based paints do not dissolve in water, which makes traditional soap and water ineffective for cleaning brushes that have been used with these types of paints. Mineral spirits and paint thinner are solvents specifically designed to break down oil-based substances, allowing for the effective removal of paint from the bristles of the brush.

In addition, using mineral spirits or paint thinner not only cleans the brush thoroughly but also helps to maintain the integrity of the bristles, ensuring that they do not become damaged or lose their shape. After cleaning with a solvent, it is often advisable to wash the brushes with soap and water to remove any residual solvent and ensure that they are completely clean and free of any leftover paint.

While vinegar and alcohol may have some cleaning properties, they are not appropriate for oil-based paints. Vinegar is more suited for water-based products, and alcohol, while a good solvent for specific applications, does not effectively dissolve the oils found in oil-based paints, making them less effective alternatives for brush cleaning in this context.