Hair growth for your ears! This type of hair growth is different than the hairs which grow longer as you get older…Â 
The problem with most types of hearing aids, cochlear implants, and other types of enhancements is that they only amplify the body’s ability to hear. I talked about a type of pill we someday might be able to take that helps, here.
Research has found a way to regrow the hairs in your ear…well, at this point, only in mice. But, in theory, you could put these hair growth cells in the part of your ear where you have the most damage…and, well, it might help!
The summary article is here. The original article is here. And, to nerd-out, here is the research paper.