Here are a few options for the review, depending on which product you used (drops vs. a patch) and where you are posting (Amazon, company website, etc.).
Before you try to fix it, you need to know what kind of "patch" you are dealing with. Muffled hearing after swimming usually falls into one of two categories: muffled hearing after swimming patched
Headline: Saved my ears after swimming – no more muffled sound! Here are a few options for the review,