How Long Does Minoxidil (Rogaine) “Shedding Phase” Last?

This question comes from a member of our hair loss social community and discussion forums: 

I started minoxidil (Rogaine) for my hair loss almost 12 months ago. I was told minoxidil causes an initial shedding phase, but thought it only lasted a few months. 12 months later, however, my hair continues to shed. When will this end? How long does a minoxidil shed usually last?

The initial minoxidil shedding phase lasts for 3-4 months. This correlates with the time it takes for the hair follicles to transition into a telogen or “resting” state, and then return to a growth (anagen) state ready to produce thicker, healthier hair. By month 4-5, visible hair should be growing back. After this period, most hair loss experts recommend using the medication for a total of 6 to 12 months (with most recommending 12) before determining if it’s working.

A 12 month minoxidil “shed” seems unlikely. It’s more likely that you, unfortunately, are not a minoxidil responder and the shedding is a result of progressive androgenic alopecia (male pattern hair loss). You could discuss finasteride (Propecia) with a trusted physician, and consider a trial of this preventive hair loss medication.
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Blake – aka Future_HT_Doc

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