First-Line Treatment for Female Hair Loss

Initial Treatment Protocol

The American College of Dermatology recommends applying topical minoxidil 5% solution, 1 mL twice daily to the affected scalp areas for women with androgenetic alopecia or PCOS-related hair loss 1, 3
Women should expect increased hair density, increased hair shaft diameter, and decreased proportion of telogen hairs as indicators of positive response to topical minoxidil 5% solution 2, 3

The American Academy of Dermatology advises that never discontinuing minoxidil once started is crucial, as all hair growth gains will be completely lost upon cessation 1, 3

If response remains suboptimal after 6-12 months of minoxidil monotherapy, the National Institute of Health recommends adding platelet-rich plasma (PRP) therapy while continuing topical minoxidil 1, 2
PRP combined with minoxidil produces a 57% median increase in terminal hair density versus 48% with minoxidil alone at 32 weeks 3
The initial treatment phase should consist of 3-5 PRP sessions spaced exactly 1 month apart, followed by a maintenance phase of 1 session every 6 months after initial treatment 1, 2, 3

The International Society of Hair Restoration Surgery recommends using nonactivated PRP only, as activation reduces efficacy by 31% 1, 3
Target platelet concentration should be 1-1.5 million platelets per µL, and pharmaceutical-grade topical anesthetic cream should be applied before injection due to significant pain 2, 3

The American Academy of Dermatology suggests evaluating treatment efficacy using objective measures, including standardized before-and-after photographs, trichoscopy, hair pull test, and patient self-assessment questionnaires 2, 3
Schedule formal evaluation at 12 months for PRP combination therapy and at 3 months initially for minoxidil monotherapy, recognizing that meaningful changes may take 12-24 months 2

The British Association of Dermatologists advises against using oral zinc or isoprinosine, as these have been proven ineffective in controlled trials 1, 4
Avoid nutritional supplements without documented deficiencies, as no high-quality evidence supports their use, and never use activated PRP, as it significantly reduces treatment efficacy 1, 3