Clear TPU naturally yellows over time with exposure to UV light and oils - this is a normal property of TPU material that affects all clear cases, even premium ones.

Why yellowing occurs

• UV exposure from sunlight and indoor lighting
• Contact with natural oils from hands and surfaces
• Normal wear over time
• Harsh or toxic environments that accelerate discoloration
• Natural material aging over time, which is unavoidable even in cases with protective coatings

Tips to Prevent or Slow Down Yellowing

While it’s impossible to entirely prevent yellowing, the following tips can help extend your case's clarity:

1. Avoid Harmful Environments: Steer clear of exposing your phone case to chemicals or substances that may accelerate aging.
2. Minimize UV Exposure: Protect your device from direct sunlight by keeping it in shaded areas or storing it in a bag when not in use.
3. Clean Regularly: Use a gentle microfiber cloth to clean your case and remove dirt or residue that could contribute to discoloration.

Alternative options

If you're concerned about yellowing, consider choosing a case with black edges instead of clear edges. This provides the same protection while minimizing the visible effects of natural TPU aging. While considering alternative options, it's also useful to maintain your existing case by following preventive tips for prolonged clarity.

What happens next

Browse our case collection to find options with colored edges if you prefer to avoid the natural yellowing that occurs with clear TPU materials.

Updated on: 12/02/2026