Vaginal dryness can be hard on any sex life.   Not only can it be painful, but it can kill the female libido as well.  Some of the main causes of vaginal dryness include hormonal changes.  Of the most common causes of vaginal dryness is a decrease in estrogen levels during menopause, perimenopause, after childbirth, or during breastfeeding. Decreased levels of estrogen leads to thinning and inflammation of the labia typically called vaginal atrophy