As a woman ages, her libido and desire for sex often diminishes. Testosterone levels are highest for a woman in the early twenties, but by the time she approaches and enters menopause there may be a testosterone deficiency.  Testosterone can play a key role in libido, energy, bone health and immune function in women. Produced by the ovaries, testosterone over the course of the menstrual cycle  has a rhythm in women.
The replacement of estrogen alone may not correct loss of muscle tone, absent sex drive, or general lack of mental function. The Wiley Protocol Testosterone cream for women is biomimetic and replicates feminine testosterone hormone rhythms.