How can I replace the caulk in my shower?

To replace the caulk in your shower, first remove the old caulk using a caulk removal tool or a utility knife. Clean the area thoroughly with a mildew remover and let it dry completely. Apply new caulk using a caulk gun, making sure to fill the gap completely and smoothly. Use a wet finger or a caulk finishing tool to smooth out the caulk. Allow the caulk to dry completely before using the shower.