Methods The study will be done as a double-blind randomized crossover study. Women entering the study will be pre-menopausal ages 21-40 with a diagnosis of hypo-active sexual disorder by an experienced sexologist diplomate of the Israel Society for Sexual Therapy. Patients will be accepted for study only if they can plan intercourse with their partner. Patients unable to do so will be offered 3 sessions of counseling about sexual communication and those still unable to plan intercourse after those 3 sessions will be excluded from the study. Patients accepted for the study after written informed consent will be given 8 packets of Testosteron Gel (Androgel) 50mg and shown how to spread the gel on the skin of the lower abdomen or upper shoulders. They will be told that they can use the gel up to twice weekly for one month. Patients will be instructed to spread the gel 4-8 hours before planned intercourse. The patients will be instructed to shower to remove any remaining gel after intercourse. After each intercourse they will fill out the Arizona Sexual Experiences Scale (ASEX)- Female [McGahuey, et al. 2000]. At baseline and at the end of the month they will be interviewed and rated for the month as a whole using the Sexual Function Questionnaire (SFQ-V1) [Quirk, et al. 2002]. They will then be given a package of 8 placebo gels with the same instruction and invited back after a month for another rating. Half of the women will be given placebo and then switched over to active androgen.