How can I properly apply caulk to my bathtub to prevent leaks and maintain a watertight seal?

To properly apply caulk to your bathtub, start by cleaning the area thoroughly and removing any old caulk. Use a caulk gun to apply a smooth, even bead of caulk along the joint between the bathtub and the wall. Use a wet finger or caulk tool to smooth out the caulk and create a watertight seal. Allow the caulk to dry completely before using the bathtub. Regularly inspect and replace the caulk as needed to prevent leaks and maintain the seal.