Unless you purchase specially-made clear cases with anti-yellowing properties, there is little you can do to prevent your clear iPhone case from yellowing. It hurts to hear this, but it is what it is. Though good in many spheres, many transparent iPhone cases are TPU-made, and this material degrades and discolors with some environmental factors.
These environmental factors are so close to us that they are almost unavoidable. Therefore, the only practical thing you can aim to achieve is to delay the time the case yellows if you’ve got an ordinary clear case. Conversely, you can avoid this problem by purchasing quality anti-yellowing cases like ESR’s Krystec anti-yellowing clear case.
If that’s the case, this blog post may not be necessary for you. You only need to clean it regularly, and everything should be fine. But for the common clear cases, here are some things you can do to delay its yellowing:
1. Limit Exposure To The Sun
In clear cases, the sun’s ultraviolet radiation is one of the leading causes of aging. So, if you can avoid exposing your clear case to the sun, you can block this factor and significantly delay your iPhone’s aging process. Office workers or people that work from home are better positioned to meet this condition, as many are often indoors when the sun is at its head.
2. Avoid Contact With Sweat
As you probably know, sweat is a combination of several things, including oil, salts, water, and acidic content. When these things constantly meet with your clear case, it erodes the coatings and exposes its natural yellow coloration. Besides, their regular deposition on the case creates a layer of debris that discolorations and builds up germs.
3. Guard Against Over-Heating
Another recipe for a quick yellowing of clear cases is heating. And besides the sun, holding a case with the hand for too long also generates heat. Another heat source is MagSafe charging with chargers that do not have cooling technologies. With constant heating, there is a breakdown of the bluish dinge that confers clarity on the case, causing its yellowing.
4. Clean The Case Regularly
Besides yellowing, a dirt buildup can quickly leave your iPhone cover undesirable. You can always restore your yellowing case to its crystal-clear form with a damp cloth and a small detergent or baking soda. Of course, the effectiveness will depend on the degree of yellowing and what caused it.
5. Watch Out For The Early Signs
Most times, the yellowing begins from a location before spreading over the case. You can quickly identify this spot and try to reverse it if you are very observant. Some of the efforts people have made to restore their case clarity involved using baking soda and a wet toothbrush to scrub it gently. This approach can help elongate your case but doesn’t resolve the underlying problem.
KrystecTM Clear Technology: Solution to Clear Case Yellowing
While the tips I shared above will help extend the lifeline of a standard clear case, it doesn’t take care of the issue causing it. Therefore, it’s only a matter of weeks or months before the discoloration begins. One powerful solution engineered by a frontline accessory manufacturer, ESR, is the Krystec™ Clear technology.
The technology gets to the root of the problem by modifying the material composition of clear cases. Instead of the traditional thermoplastic polyurethane (TPU) previously used, it now uses ultra-clear polycarbonate material that resists abrasion and yellowing. The result is a crystal-clear iPhone case that doesn’t discoloration even on exposure to UV rays.
Sample A: SmartDevil Clear Case (TPU)
Sample B: ESR Krystec Clear Case with HaloLock (TPU+PC)
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During test |
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| After test -A- Exposured 9h | After test -B- Exposured 9h |
The inspections conducted by SGS, a global certification body headquartered in Switzerland, affirmed that ESR’s anti-yellowing clear case remained clear after continuous exposure to UV rays for 48 hours. On the contrary, a standard case used as a control started yellowing after 9 hours and was yellow all over after continued exposure for two days.
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| After test -A- Exposured 30h | After test -B- Exposured 30h |
The ESR Krystec clear case measured under the spectrophotometer labelled Sample B in this test gave a better grey score than its competitor. The image below brings this to the fore.
Test Result:
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Sample |
Exposure duration | ||||
| 9h | 21h | 30h | 48h | ||
| A | ΔE*ab | 5.68 | 11.12 | 17.33 | 29.54 |
| Grey scale | / | / | / | 2 | |
| B | ΔE*ab | 1.31 | 1.95 | 2.38 | 3.07 |
| Grey scale | / | / | / | 4 | |
Note:
- ΔE*abwas measured by sphere spectrophotometer under D65 standard light source and with 10° The results include specular component reflection condition, 8mm aperture.
- Theresults were carried out within 1 hour after above specified durations for the intermediate inspection as well as at the end of the
- Accordingto ISO 105-A02:1993/Cor.2:2005, the grey scale was determined under the D65 standard light, with scale 5 as the best and scale 1 as the
- The test resultsof sample B in this test report were transferred from test report No.: SZIN22000415PL01-2_EN dated: 2022-11-14.
After 48 hours, ESR anti-yellowing case had a grey score of 4 out of 5, while the standard clear case used as a control had 2. Therefore, the ESR Krystec case ranks higher in resisting yellowing than an ordinary clear case. If you have an iPhone 14 Pro Max and need an anti-yellowing clear case, the ESR case described below is one of the best available
Krystec™ Clear Case with HaloLock – $26.99
Highlights
- Bottom-Edge Protection
- MagSafe Compatible
- KrystecTMClear
- Shock-Absorbing Ends
Armed with a magnetic HaloLock at the back, this case is ESR’s most transparent with anti-yellowing abilities. It features four air-guarded ends with shock-absorbing capabilities should your iPhone mistakenly falls. The Krystec technology of this case masterfully combines TPU and polycarbonate material to deliver a product that lasts longer and remains ultra-clear.
Do you think about MagSafe charging with this case? It sure supports it and comes with powerful magnets that help it to align correctly with the phone. All ports are precise, and the buttons also respond to pressing timely with a tactile feel. It is easy to hold and fully compatible with the iPhone 14 series.
Conclusion
Yellowing of clear cases is an aging process that wears off the coatings from the case’s material. It is not a desirable property, but there’s little anyone can do about it because the conditions that bring about their degradation are ready with us.
ESR’s Krystec clear technology takes care of this problem with its ultra-clear and military-grade transparent case. It stays clear longer than the rest, and it is the case to buy if you want to highlight your iPhone 14 Pro Max’s colorful design for a long time. The price is relatively more affordable than other ordinary transparent cases.
