Remove the drain cover
Pull out visible hair and debris by hand or with a drain tool
Pour boiling water down the drain
Use a plunger over the drain opening
Mix baking soda and vinegar, then flush with hot water
Use a drain snake or auger to clear deeper clogs
Remove and clean the drain stopper if present
Clean the P-trap if accessible
Flush the drain with hot water after clearing
Repeat the process if needed
Call a plumber if the clog remains