PEER-REVIEW | HAIR GROWTH |


PLATELET-RICH PLASMA:


A THERAPY FOR HAIR GROWTH


Gilbert Amgar and Pierre Bouhanna investigate the


novel application of platelet-rich plasma preparations as a treatment for male and female hair-loss


ABSTRACT Medical treatments for hair-loss, such as minoxidil lotion, finasteride 1 mg oral, or cyproterone acetate oral, may impede the development of baldness. In recent years, however, it has also been found that platelet-rich plasma (PRP) can also be injected into the scalp to reverse hair miniaturisation. This article will explore three main points: how growth factors interfere with the hair cycle, a review of the literature pertaining to treatments for hair loss (particularly the use of PRP), and a proposal of guidelines for future treatment evaluations.


male and female pattern baldness as a result of changes in its metabolism. In normal hair loss, less than 100 hairs fall each day


I


GILBERT AMGAR is Aesthetic Practitioner, France, and PIERRE BOUHANNA is Dermatologist and Expert in Hair Surgery, Paris, France.


email: gilbert.amgar@orange.fr 20 ❚


KEYWORDS PRP, hair growth, growth factors, phototrichogram, androgenic alopecia, alopecia areata


June 2013 | prime-journal.com


and are replaced by new, thick hair. In the evolution of male and female pattern baldness, the new hair is fine and thin (intermediate hair or miniaturised hair). Male and female baldness usually progresses in a definitive pattern. Medical treatments for hair loss, such as minoxidil lotion, finasteride 1 mg oral, or cyproterone acetate oral, may impede the development of baldness. In recent years, however, it has also been found that platelet-rich plasma (PRP) can also be injected into the scalp to reverse hair miniaturisation. A phototrichogram using a digital camera enables an objective measurement of hair-growth parameters2


, such as


density, number of miniaturised and/or terminal hairs, and hair growth rate on a selected and tattooed area (Figure 1).


NTEREST IN THE REVERSAL OF BALDNESS has been enhanced by a precise multifactorial classification of each individual to effectively reverse male and female androgenic alopecia (AGA) in selected patients1


. Dihydrotestosterone (DHT) is the specific hormone responsible for


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84