Sir tell me if there is hair transplant facility is available in AIIMS or not and if present then how to apply and cost per graft

for the hair transplant facility at AIIMS, You have to inquire from Plastic surgery or Dermatology department in AIIMS. Previously only Plastic surgeons used to do hair transplant but nowadays dermatologists also actively involved in hair transplant surgery.

There are two main techniques, FUT hair transplant and FUE hair transplant. both techniques are good but you should inquire properly about the doctor who will do your hair transplant, Whether he is trained in both techniques or not and routinely which technique he is using. Follicular transaction(damage to hair root) depends on the experience and training level of the surgeon.