How to Clean Mineral Buildup from a Showerhead

Mineral deposits clog your showerhead the way rust clogs a pipe—slowly at first, then all at once. Hard water leaves behind calcium and magnesium salts that collect inside the spray nozzles and reduce water pressure to a trickle. The fix is straightforward and chemical-free if you act early, or requires a bit of elbow grease if the deposits have set in. A clean showerhead takes five minutes of active work and costs almost nothing. The payoff is immediate: water hits you like it did on day one, and you've just avoided a twenty-minute hot shower becoming a lukewarm drizzle.

  1. Unscrew Without Stripping. Before you start, turn the water off. Grip the showerhead firmly with your hand or wrap a cloth around it for better grip, then rotate counterclockwise. Most showerheads unscrew by hand without tools. If it's tight, wrap a cloth around the fitting to protect the finish and use an adjustable wrench. Turn slowly and steadily—do not force it. If it won't budge after gentle pressure, stop and apply penetrating oil (WD-40 or equivalent) to the threads and wait 15 minutes before trying again.
  2. Prepare Your Soak Bath. Use a bowl, bucket, or even a large plastic bag that's sturdy enough to hold liquid. Pour enough white vinegar to fully submerge the showerhead. Distilled white vinegar (5% acidity) works best and costs pennies. If you have it on hand, you can use apple cider vinegar, though white vinegar is more effective on mineral deposits.
  3. Let Acid Do the Work. Place the showerhead entirely in the vinegar. Set a timer for 1 to 2 hours. For light deposits, 1 hour is usually enough. For heavy, crusty buildup that's been accumulating for a year or more, let it soak for 2 hours or even overnight. The acetic acid in the vinegar dissolves calcium and magnesium deposits without scrubbing them away initially—chemistry does the work.
  4. Check What Dissolved. After soaking, take the showerhead out of the vinegar and look at the nozzles. The white, chalky, or rust-colored buildup should look softer and sometimes partially dissolved. If deposits are still thick and hardened, return the showerhead to the vinegar for another 30-60 minutes. If they look soft or powdery, you're ready to scrub.
  5. Scrub Loosened Buildup Away. Use an old toothbrush or a soft-bristled brush (not wire brush—that can damage the finish). Dip the brush in the vinegar and scrub the entire surface of the showerhead, paying special attention to the nozzle face where the spray holes are. Work the brush in circular motions and poke gently into each hole to dislodge deposits. Don't be aggressive—the vinegar has already loosened them, so firm but gentle pressure is enough.
  6. Clear Stubborn Nozzles. If a few spray holes remain blocked after scrubbing, straighten a paperclip or use a thin pin or needle. Very gently insert the point into the hole and move it back and forth—not aggressively, just enough to dislodge the deposit. Mineral buildup is brittle, so light pressure usually works. Do not force the pin or bend the hole. If the deposit won't budge with light pressure, soak again for 30 minutes.
  7. Flush Out Loose Deposits. Hold the showerhead under a strong stream of tap water. Rinse the entire surface, then turn it so the nozzle face is under the water and let the pressure run through the spray holes from the inside out. Continue rinsing for at least 30 seconds to wash away all vinegar and loose deposits. You should see clear water coming through the nozzles by the end.
  8. Reattach Securely. Screw the showerhead back onto the shower arm by hand, turning clockwise. Tighten it by hand first, then use an adjustable wrench for a final quarter-turn to ensure it's snug. Do not over-tighten—you're just sealing the connection, not torque-testing it. If you use a wrench, apply steady, moderate pressure only.
  9. Verify Full Pressure Restored. Turn the water back on and let it run for 10 seconds to flush any remaining vinegar from the lines. Then adjust the showerhead to your preferred angle and check the spray pattern. You should feel noticeably stronger water pressure and a more even spray across all nozzles. If one or two holes are still weak, the deposits may not have fully cleared—soak again for 30 minutes and repeat the scrubbing.