Well... I don't know how one gets alopecia.
I doubt it's something you can order off the web.
From a male perspective at least... hair loss comes on all by itself as one ages. Unfortunately it occurs in most of the wrong places.
I have hairs growing out of my ears & long hairs that grow in my eyebrows. (I pull them all out!) I sometimes joke that I'm turning into a chimpanzee!
But then, at the same time, I'm gradually losing more-&-more of the hair on the top of my head!
Getting old isn't for wimps...