Well..... I have always had BIG veins and close to the surface in my arms in particular but in my legs too.
I have no doubt whatsoever that they are not as prominent and noticeable now after 10 months HRT - plus not exerting myself much for the last 6 years, but it was the HRT that made the difference for sure.
My arms are much slimmer and more feminine

- on the downside, that makes my large hands look even bigger though
.... on the subject of skin:-
I used to epilate my arms without trouble, it just felt like pins-and-needles to me and I couldn't understand why people complained about it so much.
Despite the fact that my arm hair is now fine and downy though, in the last couple of months though it has been hurting - really hurting a lot, so much so that I cannot bear to do it any longer.

- if I knew Secrets, and someone was doing that to me - I WOULD tell them