As before answers, for a complete assessment a personal diagnosis will be required. Your hair characteristics appear to be, straight fine hair shaft with a relatively high skin complexion to hair colour contrast. Your follicular unit hair density can be measure using magnification. Along with an approximation of the average hair count per FU. Whether this shows DUPA or simply a lower than average density a test would tell.
When you say a full density it needs some clarification. A hair transplant often cannot replace like for like hair density that was originally there prior to any hair loss. If this was actually required a hair transplant would not be practical. As the coverage would be minimal. A hair transplant works by giving the illusion of hair fullness. Using the natural hair characteristics to their advantage. The length of your hair will also change the look and illusion of thickness. Shorter hair doesn´t cover the scalp as well so can appear thinner. Whereas longer hair, and especially hair with a natural curl can look much fuller and thicker. The number of grafts will depend on the hairline position decided upon with you and the doctor. This will partly be decided by assessing your donor hair density to ensure any future hair loss can be successfully treated,
At 21 it is normal and common for the hair characteristics to change, along with other aspects of your body. As hormones change. The hairline may slightly mature in the look and framing of your face. This is not always the onset of male pattern baldness. The genetic hair loss condition. The first step if you are concerned is look at the priority. Normally this will be to preserve and if possible improve your hair growth. As MPB has no cure and a hair transplant is certainly not a cure to hair loss. The first step is to look at treatment. Have a proper consultation and discuss the variety of treatment available. Three FDA approved hair loss treatments and the common alternative treatments many men use.
For the majority hair growth starts around three months after your hair transplant procedure. Over the next year the hair matures and fully grows. Each month more regrowth becomes apparent giving you a more defined hairline, coverage and hair density. Grafts are normally natural follicular units. Each unit has between one to four hairs in each. They are distributed over the recipient area by the Doctor. To gain the most cosmetically natural result. The lower the number of grafts and the larger the surface area will reduce the impact of the result as the density placed will be low. This is something you need to discuss with your Doctor to clarify properly.
There are many aspects to the design of your hairline. One could be your age and general hair characteristics. A hairline will naturally mature on a man normally in their mid twenties. This does not mean the onset of male pattern baldness all the time. A hairline position needs to follow the natural bone and facial structure. also ensure it will look natural as you age and not only for today.
