Sometimes, yes, the changes are quite subtil, as there may only be minor things needed to change. Often times, the surrounding in the subtil cases cannot put the finger on what has happened and wonders if the person have had a facelift or began a new diet or such.
Other times, however, the changes are
very noticeable and have truly worked incredible miracles and left the patient forever thankful.
Before and after;

Before and after;

Before and after;
Before and after;

Before and after;

Before and after;

Before and after;

Before and after;

And, not to forget, our very own Susan's member who's name I have so very unfortunately forgotten for the moment;
I think that new broad on the right should be legally persecuted for doing away with that gorgeous guy on the left! Darn her!

As previously stated, only a few decades ago, these people would have been denied treatment, as full passability in the would-be Sex was acquired to be judged as appropriate for transition.
And in the event that they would still have been able to get their treatment, they would not have lead a too easy post-life, except maybe for the third girl counted from the top, as she initially had fairly androgyne features already, and she had probably been considered fairly beautiful, although her before-look cannot in any way be compaired to the amazing after-result.