Why Do Phone Cases Turn Yellow?
Clear design phone case is the most selling type because it is simple, flexible, gel crystal and durable, but there is one big problem that most customers complain about is the clear phone case turns yellow after using a time, maybe 1 month, 3 months, finally they will turn yellow and ugly without surprise.
Because almost every clear and soft phone case is made by Thermoplastic polyurethane (TPU), it is a material that is soft, high transparent, and protective, but this material will effect by heat, light, and chemicals, these polymers turn yellow as they age.
3 main reasons that clear phone case turns yellow
1. High temperature
The high temperature will degrade the TPU, that is why clear phone case more easily turn yellow in summer time and it is can’t avoidable unless you live in a cooler place every day.
2. Strong light
The Ultraviolet rays causing discoloration and makes the TPU material turn yellow fast if you working outside under the sunshine.
3. Sweat and oil
Sweat and oil from your hands or other products contains some chemicals, these chemicals will adhere to the surface of TPU, change the properties of TPU raw materials, and accelerate the yellowing process, for someone who smoking often will be faster.
Now we know the basic reason why TPU clear phone case will turn yellow over time, no one case is spared unless you dont use it.
3 ways to clean a clear phone case
1. Stay cool
Try stay a cooler place when using the TPU clear phone case, if you have to work outside daily, we do not recommend to choice a TPU phone case to protect.
2. Clean with alcohol pad
The Alcohol swabs can clean up bacteria, oil and sweat that adhere to the surface of the phone case daily, this step will slow down the process of TPU phone case turns yellow too fast.
3. Clean everyday if possible
This is a very good habit, If you can use an alcohol pad to clean your phone case frequently every day before going to bed. each time we wipe, around 70%-90% chemicals will remove from the TPU clear phone case.
Which Clear Phone Case Won’t Turn Yellow?
If you want have a phone case that won’t yellow but also need be clear transparent, you can consider about the TPU acrylic hybrid clear phone case.
It is a material which combine acrylic at back and a soft TPU at bumper, the acrylic material will not turn yellow over time and also anti scratches, it is offer a raised camera lips and shockproof coners but still keep minimalist design.