Do you mean you have a handle for the hot and another one for the cold? If that is the case, the same way you would replace any washer in a similar set up.
Call a plumber
We seem to have some unwelcome Mickeys and Minnies in our house. What is the best way to get rid of them?
I want to remove my popcorn ceiling, but it has asbestos in it. How do I go about this safely?
How do I fill gaps at baseboard, should I caulk? If so, does anyone know how to caulk baseboards?
How do I fix squeaky hardwood floors?
Magnetic strip on shower door disintegrated
Do you mean you have a handle for the hot and another one for the cold? If that is the case, the same way you would replace any washer in a similar set up.
Call a plumber