If you are just starting your transition, you will want to be aware of the changes that will happen with your hair. For most transgender women, your new regimen of hormones and androgen blockers will take 2-3 years for completion. During that time, radical changes to your hair can happen. For most trans but not all, most of your upper body hair (chest and back) will be significantly reduced, up to and possibly over 95% eradication. The hair on your arms can be thinned. Again, it will vary from person to person with the possibility of 75% reduction. Results will also vary with regard to your legs.
The face is the biggest disappointment. For most, no changes will be seen with facial hair once you start your transition. Some claim to have thinning once they transition, but it's difficult to say how much fact is behind that. Once you start your transition, you start treating your facial hair differently. Here are some examples: shaving in different directions, plucking, waxing, tweezing mechanical epilators (Emjoi), laser, and of course, the only FDA approved method for permanent hair removal, electrolysis. With the exception of electrolysis and laser, all of the other methods can lead one to believe that her facial hair has been thinning.