Only a certain way of looking at things but if someone researches neoteny, estrogen appears to increase neotenous appearance, which is generally seen as an improvement in facial attractiveness towards that of female/child-like appearance, often related to eye size and lip size and hair thickness and ability to be grown long and clarity of facial skin. Testosterone appears to do the opposite and it can take attractive female features and distort them which, except for muscles, perhaps, might be akin to ravaging one's appearance. I have seen beautiful cis-females on FtM HRT and I can only imagine how difficult that might be for parents because quite often, if not always, there is a resultant diminution in attractiveness, including hair loss which some might find shocking and a squaring of the face often noted in MtFs whose faces don't respond at all or much to HRT. Thus, the oval hairline and oval facial appearance of females. The lack of this oval nature together with a broad or square chin are often giveaways for MtFs trying to pass.
This "ravaging" isn't dissimilar to what I experienced between my initial two driver's licenses where I went from androgynous beauty to pretty much eh with a great increase in beard and body hair growth and diminution in hair volume. I experienced brow bossing, sort of a caveman-like aspect above the brows and below the hairline (which is supposed to be permanent but estrogen took care of that for me, too) and dermatitis both of which are testosterone artifacts and generally seen as things that impair neoteny. Anyone wanting a visual comparison should just google Leif Garrett, the former pop star and pretend boyfriend of Kristy McNichol. Mr. Garrett went from androgynous/feminine with gorgeous looks to someone who might be described as distinctly unattractive in the space of about four years, going from long blondish locks to baldness quite quickly and many of us cis-males on here know exactly how horrible it is to lose one's looks "overnight".
