Smartphone case Causes of yellowing and remedies!How to remove discolored stains

I use it every day, so I don't usually notice it, but when I look at the smartphone case, it may turn yellow. The smartphone case protects your smartphone from external factors every day. It is not uncommon for it to deteriorate after many years of use.

I know it's dirty or damaged, but why does the smartphone case turn yellow? Therefore, this time we will introduce the causes of yellowing in smartphone cases and countermeasures against yellowing. By learning about the yellowing of smartphone cases, you will acquire the basic knowledge to avoid yellowing.

When your important smartphone case is yellowing before you know it

The important smartphone case is yellow. Have you ever had such an experience? You can assume that it will get dirty or damaged during use, but what is the cause of the yellowing of the case?

The cause of yellowing of smartphone cases varies from case to case. Some materials do not yellow at all, and some smartphone cases are made of materials that tend to yellow. I will also introduce that area.

What causes the yellowing of the smartphone case?

Various factors appear in the yellowing. There are various materials for the case, and the method of discoloration and deterioration differs depending on the material. Let's look at each material.

Causes of yellowing of polycarbonate

Polycarbonate is a seemingly plastic-like material. The hard case of the smartphone uses polycarbonate. Polycarbonate is a popular material used in various personal items such as home appliances.

Although it is a durable material that is easy to handle, it may cause yellowing when exposed to ultraviolet rays. The yellowing of the hard cases of many smartphones is thought to be due to the chemical changes caused by this ultraviolet light.

Causes of yellowing of TPU material

"TPU (Thermoplastic Polyurethane)" material, which is a kind of plastic, is used as a soft case for smartphones and is characterized by a soft touch like silicon. It is a popular material because it protects your smartphone moderately and you will not get tired even if you hold it for a long time.

As with polycarbonate, the yellowing of the soft case is thought to be due to a chemical reaction caused by ultraviolet rays and deterioration of the material over time.

Causes of yellowing of wood material

Wood smartphone cases, which are characterized by a warm atmosphere and texture, may also turn yellow. It is highly probable that the cause of yellowing of the wood material is dirt or tar. The wood material is also damaged by UV light, but it does not turn yellow.

Causes of yellowing of cloth material

Most of the yellowing of the cloth material is due to dirt and tar. It is also damaged and tanned by UV light, but it is not as yellowish as polycarbonate and silicone materials.

How to deal with yellowing of smartphone cases?

Now that the cause is known, we will introduce how to deal with yellowing caused by the smartphone case by material.

How to deal with yellowing of polycarbonate / TPU material

There are two ways to remove the yellowing of polycarbonate and TPU materials.

• Rub with a melamine sponge soaked in water

• Dissolve oxygen bleach in water, attach a case and expose to the sun for several days.

Yellowing due to aging cannot be dealt with, but yellowing due to ultraviolet rays can be removed by this method.

How to deal with yellowing of wood / cloth materials

Here's how to deal with the yellowing of wood and cloth materials.

• Rinse with a mild detergent

• Soak in oxygen bleach

Yellowing due to dirt and tar can be dealt with in this way. However, depending on the material, detergents and oxygen bleach may not be available, so it is recommended to check in advance.

What you can do to prevent the smartphone case from yellowing

Once the smartphone case turns yellow, it can be a daunting task to remove. We recommend that you take measures to prevent the smartphone case from yellowing in advance. The following two measures can be taken.

• Avoid exposing your smartphone case to UV rays as much as possible

• Do not put wood or cloth smartphone cases in a room with cigarettes.

By taking these measures, the yellowing of the smartphone case can be significantly reduced. Also, do not leave it until dirt or yellowing is noticeable, and you can do it about once a month, so it is also effective to clean the smartphone case regularly.

summary

I explained the causes and countermeasures for yellowing of the smartphone case. The yellowing of many smartphone cases is thought to be due to UV rays and chemical changes in the material of the smartphone case. The most effective way is to keep your smartphone case out of UV light. If you have a lot of opportunities to use your smartphone outdoors, you can also use a hard case made of carbonate material that does not show yellowing.