Maybe you have a good ability to deal with external things. Just like taking a bath, it will wash away some unhappiness and troubles, but when combing, you will still find that your heart is affected. Maybe you think you can handle some things well, and you will prove to others that you can handle them well enough, but some influences have quietly happened to you like the traces of years. Inadvertently, when combing in the mirror, I found myself at a loss.
In reality, you may not have obvious hair loss, but in your dream, you in your big mirror have begun to lose your hair. This is what's inside you. Maybe you should really care about her. Can't she take it?
I hope you take good care of your heart and don't make her haggard.