The grout next to my bathroom sink was looking a bit piqued.
Afterward, it looked even worse:
I guess the bubbling from the hydrogen peroxide loosened too much of the old grout.
I wasn’t about to start a complicated re-grouting project. I am not fond of the tile countertop because of the difficulty in keeping grout lines clean and hope to replace it one day, so why bother?
Instead, I let white silicone caulk come to the rescue. I put masking tape on either side of the grout lines, got out my caulk gun, squeezed a small bead in place, smoothed it down with a damp fingertip, removed the tape, and smoothed again. Ta-da!:
Now that’s a home improvement.