Shedding a couple of months post op
Experiencing massive hair shedding within the 8-12 months after hair transplant is normal. Hair growth has phases growth phase, dormant phase and shedding phase.
After hair transplant, synchronization during growth and shedding phases can cause a massive hair shedding to occur. The hair grows back after 3 months latest. Transplanted hair is permanent for life and cannot be lost unless you develop alopecia related skin infection.