How can I fix a bathroom faucet drip?

To fix a bathroom faucet drip, you can start by turning off the water supply to the faucet. Next, disassemble the faucet handle and replace the worn-out washer or O-ring. Reassemble the faucet handle and turn the water supply back on to check for leaks. If the drip persists, you may need to replace the entire faucet cartridge.