Water Spot and Limescale Removers

Why water spots come off

Water spots are minerals: calcium and magnesium left behind when tap water or rain dries on the paint. Minerals dissolve in acid, not in alkaline or neutral shampoo. That's why an acidic wash clears light spotting.

If a spot is still there after an acid step, it's etched into the clear coat. Chemistry can't fill a dent, so that needs polishing. On glass, use a glass polish.

New to this? Read our pH guide.