To remove a fluorescent bulb from a bathroom light fitting, you should follow these steps:
Turn off the power: Before you start working on the light fitting, turn off the power to the bathroom light by switching off the circuit breaker or removing the fuse.
Locate the bulb: Look for the bulb in the fixture. Fluorescent bulbs are usually held in place by clips on either end of the bulb, or they may have a twist-lock mechanism.
Release the clips or twist the bulb: To remove the bulb, gently release the clips on either side of the bulb or twist the bulb counterclockwise to unlock it from the socket.
Remove the bulb: Once the bulb is unlocked, gently pull it straight out of the socket.
Dispose of the bulb properly: Fluorescent bulbs contain a small amount of mercury and should be disposed of properly. Check with your local recycling center for instructions on how to dispose of fluorescent bulbs in your area.
Install a new bulb: If you need to replace the bulb, simply insert the new bulb into the socket and lock it into place using the clips or by twisting it clockwise.
Turn on the power: Once you have installed the new bulb, turn the power back on and test the light to make sure it is working properly.