How to Clean Your iPhone Case Without Damaging It

Reading time: 5 minutes
Updated: May 2025

Your iPhone case protects your phone every day—from drops, scratches, and everyday wear and tear. But who protects the case? Over time, it collects dirt, fingerprints, and bacteria, and in the case of clear or light-colored cases, it starts to turn yellow. The good news is that cleaning your iPhone case is simple, quick, and doesn’t require any special products. In this guide, we’ll show you exactly how to do it, depending on the material of your case.

Why should you clean your iPhone case regularly?

Your phone is one of the objects you touch most throughout the day—and the case absorbs all of that. Studies show that smartphones have more bacteria than a toilet seat. Cleaning your case regularly isn’t just a matter of aesthetics—it’s also a matter of hygiene.

In addition, accumulated dirt can:

• Scratching the back of your iPhone if it gets caught between the case and the device
• Permanently stains light-colored or transparent fabrics if not removed in time
• Accelerate the deterioration of the cover material, shortening its service life

We recommend giving the cover a quick wipe-down at least once a week and a more thorough cleaning every two weeks.

What you need to clean your iPhone case

Regardless of the material, you'll need:

• Warm water
• Mild dish soap (or mild soap)
• A soft-bristled toothbrush (or a microfiber cloth)
• A dry, clean cloth

For tougher stains, you can also use:

• 70% isopropyl alcohol (available at pharmacies)
• Baking soda

⚠️ Always avoid: concentrated bleach, acetone, abrasive products, and excessively hot water—they can damage the case material and affect the colors.

How to clean a silicone case

Silicone cases are the most popular—and also the ones that yellow most easily over time. To clean them:

Quick cleaning (weekly):

1. Remove the iPhone case
2. Rinse under warm water
3. Apply a drop of mild detergent and rub with your fingers or a soft-bristled toothbrush
4. Rinse thoroughly until all the soap is gone
5. Dry with a microfiber cloth and let it air dry before putting it back on

For tough stains:

Make a paste with baking soda and water, apply it to the affected areas, let it sit for 10 minutes, and gently scrub with a brush. Baking soda is slightly abrasive but won’t damage the silicone.

💡 Note: The yellowing of the silicone is caused by oxidation of the material due to exposure to sunlight and heat. Cleaning can reduce the yellowing, but it does not completely reverse the chemical process. If the case is very yellowed, it may be time to replace it.

How to clean a plastic cover (polycarbonate / glossy)

Varnished plastic cases, such as InstaCase's Premium Glossy cases, are the easiest to clean—and the ones that look best after cleaning.

1. Remove the iPhone case
2. Dampen a microfiber cloth with warm water
3. Gently rub in circular motions
4. For stubborn fingerprints, apply a small amount of 70% isopropyl alcohol to a cloth and wipe the surface
5. Dry it immediately with a dry cloth

Glossy covers show fingerprints more easily in everyday use, but they’re easy to clean and will look like new with this method.

How to clean a leather jacket

Leather covers require special care—excess water can damage the material.

1. Use a microfiber cloth that is slightly damp (not wet)
2. Gently cleanse using circular motions
3. For stains, use a product specifically designed for skin or a drop of heavily diluted mild soap
4. Dry off immediately—never leave your skin damp
5. Occasionally, apply a moisturizing cream to keep the material supple and prevent cracks

⚠️ Never soak a leather jacket in water or use alcohol—they dry out the material and can cause permanent stains.

How to clean a yellowed clear cover

This is the most common problem and the one people search for the most. The honest answer: cleaning can improve the appearance, but it doesn’t completely reverse the yellowing —which is a chemical process that degrades TPU (thermoplastic polyurethane).

Here's what you can try:

Method 1 — Baking soda + hydrogen peroxide:

1. Mix baking soda with a few drops of hydrogen peroxide (available at pharmacies) until it forms a paste
2. Apply to the surface and let it sit for 1 hour in the sun (UV light helps lighten it)
3. Gently scrub with a brush and rinse thoroughly

Method 2 — Isopropyl alcohol:

1. Moisten a cotton ball or cloth with 70% alcohol
2. Rub the surface of the cover
3. Rinse with water and dry

If the cover is very yellowed and none of the methods work, the best solution is to replace it. Clear covers have a limited lifespan—on average, 6 to 12 months with daily use.

How often should I clean my iPhone case?

Tips for keeping your cover clean longer

A few simple habits can extend the life of your cover and reduce the frequency of deep cleanings:

• Wash your hands often —especially before using your cell phone after meals
• Avoid keeping your phone in your pants pocket with keys or coins—they'll scratch the case
• Do not expose the cover to direct sunlight for long periods of time—it accelerates yellowing
• Remove the case regularly so you can clean the back of the iPhone as well
• Always use a high-quality cover —better materials are more resistant to dirt and wear and tear

When is it time to replace the cover?

No matter how well you take care of your mattress cover, there are signs that indicate it’s time to replace it:

• Severe yellowing that does not improve with cleaning
• Cracks or broken parts that no longer protect the iPhone
• Loose cover that doesn't fit properly — no longer absorbs impacts correctly
• Fading of colors or peeling of the finish

Conclusion

Cleaning your iPhone case is a simple habit that makes a huge difference in the accessory’s appearance and durability. With water, soap, and a microfiber cloth, you can handle most cases in less than 5 minutes. For yellowed silicone cases, baking soda can help—but if the yellowing is severe, it might be a sign that it’s time to get a new case.

At InstaCase, you’ll find over 100 exclusive designs for Premium Glossy cases for iPhone and Samsung, with 24-hour delivery to mainland Portugal. Our cases are made from high-quality glossy plastic—they’re durable, easy to clean, and feature prints that won’t fade.

👉 Check out the InstaCase cases

Article written by the InstaCase Portugal team. Experts in cases and accessories for iPhone, Samsung, AirPods, and Kobo since 2020.