It is highly advisable not to smoke after a hair transplant, at least for a certain period. Smoking can significantly hinder the healing process and negatively impact the success of the transplant. Most surgeons recommend quitting smoking at least a week before the procedure and avoiding it for at least a month after to ensure optimal healing and growth of the transplanted hair. However, the longer you can abstain from smoking, the better it is for the overall success of the transplant and your general health. Always follow your surgeon’s specific advice regarding smoking and post-operative care.