Silicone phone cases attract lint, dirt, and oils from hands — the sticky feel of silicone means debris clings to it readily. Clear and light-coloured silicone cases also yellow over time due to UV exposure and oxidation; this yellowing is partly reversible with the right treatment.
Basic Clean (Dirt and Grime)
- Remove the phone from the case
- Mix warm water with a few drops of dish soap in a small bowl
- Use an old toothbrush to scrub all surfaces of the case — especially the corners and button cutouts where grime accumulates
- Rinse thoroughly with warm water
- Dry with a lint-free cloth and allow to fully air dry before putting the phone back — residual moisture can get between the phone and case
Removing Yellowing
Yellowing in clear silicone is caused by UV exposure oxidizing the material. It can be partially reduced:
- Make a paste of baking soda and dish soap — apply to the yellowed areas with a toothbrush and scrub in circular motions for 1–2 minutes
- Rinse thoroughly and assess — this reduces surface discolouration and grime-induced yellowing
- For more stubborn yellowing: soak the case in a small bowl of diluted hydrogen peroxide (3% pharmacy-grade) for 30 minutes, then scrub and rinse
- Allow to dry in indirect light — placing in direct sunlight to dry accelerates re-yellowing
Notes
- Chemical yellowing from UV oxidation that has penetrated the silicone deeply cannot be fully reversed — it can be reduced but not eliminated
- Avoid rubbing alcohol on silicone — it dries out and can cause silicone to become tacky over time
- Clean monthly to prevent build-up and slow the yellowing process