Why clear cases turn yellow, and how to slow it down

Most clear cases are made of TPU, a soft plastic that slowly breaks down under UV light and heat. That breakdown shows up as a yellow tint.

What helps

• Keep your phone out of direct sun on the car dashboard.
• Wash the case with mild soap every few weeks; skin oils speed up yellowing.
• Pick an anti-yellowing shell such as the Crystal Clear Case for iPhone 16, which blends a harder polycarbonate back with a UV-resistant coating.

No clear case stays perfectly clear forever, but these habits buy you many months.