If there are any viable follicles left on your scalp then yes, we now know that Head of Hair will work on every viable follicle when used correctly. But this will not happen overnight, it took time for you to lose the hair and, as such, it will take time for these follicles to kick start again, hair to grow to the surface and then…keep growing.
Any of your follicles that are dormant or not strong enough for healthy hair growth…then this is where Head of Hair works its best. Like a plant pot whose soil has used up its nutrients and it then needs a fertiliser to help the root system of the plant in the pot, then Head of Hair is the fertiliser for the scalp…to feed the follicle with the nutrients it needs.
Like the plant growing in the pot, it is a gradual growth and you will not notice the gradual change because you look in the mirror every day. We suggest either take a photo at your start point as a reference point or if you have already started without taking the photo, go through some old photos to compare and then you will see the changes.