I Left This on My Shower Pan and Didn’t Expect the Yellowing to Change
The shower pan wasn’t dirty in the usual sense. It had been scrubbed, rinsed, and maintained, yet a dull yellow tone remained across the textured plastic, most visible where light hit it from the side. At first, it looked like buildup. After closer inspection, it started to look like age. Before treating the color as permanent, I tried one last approach that avoided abrasion and harsh chemicals. Why Yellowing Happens on Plastic Shower Pans Yellowing on plastic shower pans usually comes from two sources. The first is surface residue. Soap scum, body oils, and minerals from hard water can settle into textured finishes and change how the surface reflects light. The second is material oxidation. Sun exposure, age, and lower-grade acrylics can cause the plastic itself to shift color over time. Cleaning works on the first case. Once oxidation sets in, scrubbing does not reverse it. That difference changes what is worth trying. What I Used and Why I Let It Sit Instead of scrubbing...