Hello, the transparent protective case for phones is generally made of TPU or PC material, which has good impact resistance and provides reliable protection for your phone.
The protective case made of this material may turn yellow after long-term use, sun exposure, sweat, or contact with dirt, which is a normal phenomenon.
In daily use, it is recommended that you try to avoid sunlight and avoid contact with colored oil stains.
If it has turned yellow, you can try wiping it with a damp, soft cloth.
If it cannot be wiped clean and it affects your experience, it is recommended that you replace it with a new protective case.
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