What are the steps to properly use a bathtub refinishing kit for restoring the appearance of a worn-out bathtub?

To properly use a bathtub refinishing kit for restoring a worn-out bathtub, follow these steps:

1. Clean the bathtub thoroughly to remove any dirt or grime.
2. Sand the surface of the bathtub to create a smooth base for the refinishing.
3. Apply the primer included in the kit to help the new finish adhere to the bathtub.
4. Use the refinishing paint or coating provided in the kit to cover the bathtub surface evenly.
5. Allow the bathtub to dry completely according to the kit instructions before using it again.