The vagina, vulva, urethra, and bladder trigone are rich in estrogen receptors. When estrogen levels fall after menopause (or after chemotherapy, endocrine therapy, or surgical menopause), these tissues become thinner, drier, less elastic, and more prone to irritation and infection. This condition is now called genitourinary syndrome of menopause (GSM) (previously atrophic vaginitis). See our GSM guide for the full picture.
Topical (vaginal) estrogen restores estrogen only where it is needed — at the vaginal, vulvar, and urethral tissues — with minimal absorption into the bloodstream. The result is a dramatic improvement in quality of life for many women.