Using hair ties when growing hair after a hair transplant is generally not recommended. Hair ties cause tension on the newly transplanted hair, potentially damaging the hair follicles and hindering growth. Avoiding hair ties is important because hair transplant surgery is a significant investment, and proper aftercare is crucial for achieving the desired results. The pros of avoiding hair ties include less stress on the transplanted hair and a higher likelihood of achieving optimal growth. The cons include not being able to style the hair as desired, which is a source of frustration for some. Overall, it is best to be patient and avoid using hair ties during the initial growth phase after a hair transplant to maximize the chances of achieving successful results.