Clean Excess Caulk and Smooth Lines
To remove extra globs of caulk and create even lines, dip your finger in water and run it down the caulk line to smooth it out (Image 1). When you wipe each length of the still-wet caulk; it will effectively force extra caulk into the open gap between tiles or between the bathtub and its surround. If you use a paper towel over your finger, refold it several times to make sure you aren’t transferring excess caulk onto the face of the tiles. If you are just using your finger, wipe clean and re-wet your finger regularly.
If you encounter a space where not enough caulk was applied, you may be able to wipe excess from another part of the same seam. If not, apply a new fine bead of caulk using the caulking gun and immediately smooth it out using a damp paper towel so that it merges with the rest of the new caulk.
Most caulks and silicones have a short set time. So if caulk dries on surrounding tiles, use a razor blade to score the edge of the caulk close to the original bead, and then scrape it clean from the face of the tile without disrupting the waterproofing seal.