About a quarter-sized amount of dish soap will work. Turn on your faucet and wait for the water to warm up. Let it dry thoroughly before using again with oil paint. Lay it down so no water is trapped in the brush head causing loosening of bristles and/or chipped, warped handles. This is optional, but you can also clean with mineral spirits every few months, for a deeper clean.
लिक्विड डिश सोप को अपने हथेली में लें: अपने ब्रश को पूर्ववत आकार दें: