Use a scraper or a knife to scrape away any old caulk, grout and dirt.
Clean the surface with detergent.
Apply masking tape to both sides of the area you want to caulk (to prevent the caulk from spreading into other areas). Fill the joints with the caulk. Maintain a steady pressure and move at a rate that will fill the crack evenly.
Wet your fingers with cold water (so that the caulk won’t stick to them). Smooth and level the caulk with your wet fingers into a neat, slightly concave bed. (Plastic gloves can also be used, but you will need to wet them)
Peel off the masking tape and discard it.
Caulking the Bathroom