Understanding what causes poor hair transplant results is important both for patients evaluating clinics and for those who have already had an unsatisfactory outcome and are considering their options. Poor results are not random — they have specific, identifiable causes.
Low graft survival is the most common cause of inadequate density. Survival rates below 70 to 75% — achievable when extraction is fast and careless, handling is rough, storage time is long, or implantation technique is poor — produce results that look thin relative to the graft count because a significant proportion of implanted follicles do not establish. Clinics that race through large graft counts in very short sessions almost always have lower survival rates than those that proceed methodically.
Poor hairline design produces results that look artificial or incongruous even when graft survival is good. A hairline placed too low, too straight, or without appropriate temple framing looks surgical rather than natural. This cannot be corrected by medical treatment and requires revision surgery to address.
Wrong angle or direction of implanted grafts produces hair that grows in an unnatural direction. This is typically the result of recipient sites being created at standardised angles rather than following the specific directional requirements of each patient’s scalp. Hair growing forward instead of to the side, or flat against the scalp instead of naturally upward, gives a telltale appearance that is immediately recognisable to anyone familiar with natural hair growth.
Shock loss of native hair that was not replaced by adequate graft coverage produces a result that looks worse than before surgery. Planning must account for the possibility of native hair shedding and ensure graft coverage is adequate to produce a net improvement even if some native hair temporarily sheds.
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