Turn your sink on and pour the water on the nozzle for about 1.5 sec, though make sure that the water doesn't have enough pressure which could displace the mesh filter. Wait for around 3 days for the IEMs to dry.

If you feel a weird ear pressure while wearing the IEMs, often resulting in a weird or imbalanced sound, then you must simply wait until it disappears. You might not experience this if you wait for more than 3 days, but I'm not sure as I only waited 3 days for each IEM.

Once the pressure is completely gone, the IEMs should sound as new. This method was successful after trying it with the cca cra, moondrop chu and 7hz zero which all had channel imbalance on the right side, especially the chu with its infamous qc.

Did it 2 months ago and still no imbalance until now. I also read a few post claiming that their IEMs survived in the washer, and I can see why.