Remove the old caulk. Use a razor blade or a wide putty knife. We found the putty knife works very well, it's quick and easy.
Use a pointed q-tip soaked in rubbing alcohol to clean any excess grime.
— Let the tub sit overnight or for 24 hours to completely dry.
Before replacing the caulk fill the tub with water to ensure the gap between the tub and wall is as wide as can be.
Squeeze the caulk, to the best of your ability, along the length of the tub in a single fluid motion.
Run your finger along the wet cloth to smooth and create a nice indent.
use a damp rag to wipe off any excess caulk for a clean finish.
— Let dry completely overnight or for 24 hours before using.