The single greatest mistake a doctor can make when treating a patient with hair loss is performing a hair transplant on Hair Restoration Clinic that is too young. Although, there is no specific age that can serve as a cut off (since this will vary from person to person), understanding the problems associated with performing hair restoration in young persons can help the physician in deciding when surgery may be appropriate. Getting it wrong can literally ruin a young person’s life.
When someone is beginning to lose hair in their teens or early 20s, there is a significant chance that he (or she) may become extensively bald later in life and that the donor area may eventually thin and become see-through over time. Although miniaturization (decreased hair shaft diameter) in the donor area is an early sign that this may occur, and can be picked up using densitometry, these changes may not be apparent when a person is still young.
If a person were to become very bald (become a Norwood Class 6 or a Class 7) then he would often not have enough hair to cover his crown. A transplanted scalp with a thin or balding crown is a pattern acceptable for an adult, but totally unsuitable for a person in his twenties.  In addition, if the donor area were to thin over time, the donor scar might become visible if the hair were worn short – a style that is much more common in people who are young.
This subject is very closely related to age. For surgical hair restoration to be successful, expectations must match what can actually be accomplished. The expectations of a young person are usually to return to the look they had as a teenager; namely to have a broad, flat hairline and to have all of the density they had only a few years before.
The problem is that a hair transplant neither creates more hair (and therefore can’t increase overall density) nor prevents further hair loss (so the pattern must be appropriate as the person ages). But since receded temples and a thin crown is not an acceptable look for a young person, the surgery should best be postponed in a person in whom this is not acceptable. As a person ages, he often becomes more realistic and is happy with what a hair transplant can actually achieve. And, over time, if a person’s donor area proves to be stable and his hair loss limited, more ambitious goals can be attained.
Chronic Sun Exposure