WTF rerun.. you can answer that stupid question to yourself. I go on the derma roller treatment, you go on the derma roller treatment. You shed, I don't. Here is your ****ing anecdote. You can shed or not and it goes to every ****ing hair loss treatments. Some people on here didn't shed yet from the derma roller treatment and some did. Shedding is not a mandatory option, it can just possibly happen. WTF you don't understand???? Derma roller cause local trauma to your scalp.. I think you can maybe expect a shedding from it.. even if the next guy don't shed, you can shed. you can ask that question to a millions guys, all the answer will be different. dumbass