When it comes to cleaning, there are many stubborn stains that are challenging to remove, and bathwater residue is one of them. Bathwater residue can accumulate on the surface of the bathtub or sink and appears as a white chalky deposit. However, there are several synonyms for the term bathwater residue, including soap scum, mineral buildup, and hard water stains. In addition, these residues can also be referred to as limescale or calcium deposits. Nonetheless, regardless of the terminology used, it is essential to find an effective cleaning solution to remove the buildup and keep the bathroom looking clean and fresh.