The only term I could think of is defeminization.
It seems like most people understand what emasculation is and the things that cause it.
What are some examples of situations that can cause the feeling?
Edit: changed effeminization to defeminization.
Don’t pluck excessively and if the hairs really bother you, get electrolysis (not laser as it’s not permanent).
I had an ocd compulsion about plucking the originally quite fine hairs on my chin and neck and the plucking caused far, far more hair to grow and it was much thicker and darker than before. I ended up getting electrolysis to remove it all as I couldn’t keep up with the plucking and it was causing so much anxiety.
Here is a link about the study on this