People without Initial Hair Loss
If you don’t experience initial hair loss (minoxidil shedding) within a month, you may think that you are not a responder to minoxidil. However, you don’t need to conclude that you are a non-responder to minoxidil.
There are some people in whom the number of fallen hair decreases and hair thickness increases after 3-6 months of treatment with minoxidil, even if they didn’t have initial hair loss.
Even though you didn’t experience noticeable minoxidil shedding, there still remains a possibility that hair thickness will increase with minoxidil.
This is the reason why the author encourages people to keep using topical minoxidil.
As the number of fallen hair decreases, the total number of scalp hair will increase and hair thickness will increase.
Accordingly, you will be able to know that you are a responder to minoxidil.
Anyway, counting the number of fallen hair in the drain after a shampoo is a simple and easy way to know by yourself whether you are a responder to minoxidil or not.