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Why most clear cases go yellow, and what to buy instead
Cheap clear cases are made entirely of TPU, a soft plastic that reacts with UV light and skin oils and turns amber within a few months. There is no cleaning method that reverses it. The fix is construction: a rigid polycarbonate back panel, which does not yellow, bonded to a TPU bumper that handles the impact. You get the clarity from one material and the drop protection from the other.
The second thing that ruins a clear case is the gap. A case that sits loose collects dust along the edges of the camera island, and that line of grey grit is more visible through clear plastic than through anything else. Everything here is cut to a single model so the back sits flush.
Keeping it clear
Wash it monthly with warm soapy water and a soft brush, and skip the alcohol wipes, which speed yellowing up. Full method in how to clean a phone case. If clarity matters less to you than grip, look at silicone phone cases instead.
Frequently asked questions
Why do clear phone cases turn yellow?
Clear phone cases turn yellow because TPU, the soft plastic most of them are made from, oxidises when exposed to UV light and skin oils. Cases with a polycarbonate back panel resist this because polycarbonate does not oxidise the same way.
How do I clean a clear phone case?
You clean a clear phone case with warm water, a drop of dish soap and a soft toothbrush along the edges and cutouts, then dry it fully before reinserting the phone. Avoid alcohol and bleach, which accelerate yellowing.
Can you reverse yellowing on a clear case?
You cannot reverse yellowing on a clear case. The discolouration is a chemical change in the plastic itself, not surface dirt, so baking soda and peroxide methods do not work despite what videos claim.
Do clear cases protect as well as solid ones?
Clear cases protect as well as solid ones when they have the same raised edges and a shock-absorbing bumper. A single-material clear shell with flat edges protects noticeably less than a two-material case.