Quote from: warlockmaker on January 02, 2018, 09:36:31 PM
Nails under HRT is akin to skin on hrt, they are much dryer. So increase water, take biotin. The dramatic change caused by hrt in mtf really affects our skin and nails.
Estrogen actually increases skin moisture and water content in skin.
Obstet Gynecol Surv. 2009 Jan;64(1):58-72."The age-associated decline in estrogen is accompanied by drier skin as the water-holding capacity is reduced (20)."
"Improvements in water retention are a result of an increase in acid mucopolysaccharides and hyaluronic acid in the dermis (29)."
"Estrogen replacement therapy has been demonstrated to improve skin hydration (4), and decrease the risk of postmenopausal dry skin (20). Elevated endogenous estrogen levels during pregnancy also improve the hydroscopic properties of the dermis (4)."
"most subjects exhibited the driest skin during the menstrual flow, when circulating estrogen levels are at their lowest (2)."
However, it appears estrogen reduces skin sebum (oil) production and by doing so, *may* weaken nails. Some women report increased nail strength with the addition of progesterone as it tends to oppose estrogen and increase sebum production. The same would, in theory, be valid, if one let their T slightly rise or add a little T.
I remember my nails getting stronger when my estrogen dosage increased, years ago. That actually surprised me! These days, I get my nails done at the salon and a bio-Gel is applied onto the nails, before applying nail polish. No issues, ever. My "fake" nails are as strong as rock but underneath, probably very brittle...oh well! They look great, don't really care about the rest.