The Sticky Hazard of Soap Scum
Most traditional bar soaps are made from animal fats (tallow). When these fats mix with the minerals in your shower water, they create a highly resilient, water-resistant film known as soap scum.
This sticky haze coats your tiles and shower glass, trapping dead skin cells and bacteria. Standard bathroom cleaners cannot penetrate this lipid barrier, which is why scrubbing feels so ineffective.

