Reaction to Keratin Hair Treatment

My hair is frizz free after paying two hundred dollars to my hair stylist. I did have to sit through the harsh smell while I wore the mask while the hairstylist was wearing his mask and straightening my hair.

However,I have a big dilemma. My hair has been shedding, almost falling out, from the follicle. I'll run my fingers through it and 7 or 8 strands of hair will be removed at a time.

This is heart breaking to me,and I'm thinking maybe at some point it will stop, however, it has been almost 3 weeks and it's still happening.
I almost wish my hair was frizzy again and that it wasn't shedding like this.

Can someone please advise if there is a way to reverse the process?