Although, large randomized, double-blind control trials have not been yet performed assessing the value of medical microneedling in promoting hair growth in androgenetic alopecia (male and female pattern baldness), anectodal experience, including my own personal experience, does attest to its value. To be effective needle lengths need to be in the range of 1.5-2.0mm in order to reach down to the growth-associated regions of the follicles--a length not typically available in commercial home-use or even aesthetician-use devices (which typically range from 0.15-0.5mm in length). Although I have been underwhelmed with the value of adding PRP in general, I have personally found the concomitant application of growth promoting agents, such as topical minoxidil, finasteride, and bimatoprost to have proven helpful.