As a part of feminizing hormone replacement therapy, many trans-feminine people will take estrogen (often as estradiol, also spelled oestradiol). This is primarily done to relieve gender dysphoria, and replace it with gender euphoria. When someone is meant to be feminine, but their appearance is not, E is here to help!

• breast development
• body fat redistribution
• decreased libido
• decreased random erections
• softer/less oily skin
• change in body odor
• "sexual dysfunction" and genital changes such as shrinkage of the penis and testicles
• decreased sperm production (do not rely on this solely as a form of birth control)
• thinning and slowed growth of body hair (note that many people will seek out other forms of hair removal)
• experience of period symptoms, such as cramps, bloating, and other PMS symptoms
• changes in sexual pleasure

FenwayHealth - Trans Health Injection Guide
Gender GP - HRT Timeline and Effects: Hormone Replacement Therapy Info
github - twipped - My collective research and experiences with trans-feminine (male to female) hormone therapy.
hemingways - info about HRT
Mayo Clinic - Feminizing Hormone Therapy
MedicalNewsToday - Can trans women get periods?
modern trans hormones - subcutaneous injection of hormones
privatemdlabs
slideshare - hormone self injection
tigermedical - Product - 1cc TuberculinSyringe
transfemscience - Genital Application of Estradiol as a Powerful Transdermal Route for Transfeminine People
UCSF - Trans Care - Information on Estrogen Hormone Therapy
unionmedico - Self injector (for needles).
YouTube Playlist: I'm Transgender
YouTube Playlist: MTF transgender
YouTube Playlist: Transition Updates
YouTube Video: Feminizing Hormone Therapy at Seattle Children's
YouTube Video: Healthcare of the Transgender Patient (5/13/19)