Blume Peytavi
Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin, Berlin, Germany
The human hair follicle, an highly developed biological autonomous machinery with individual self-renewing capacities, produces keratin fibers possessing an incredible symbolic power for attractiveness, strength, gender definition, as well as emotional and physical well-being. Creating and maintaining life-long beautiful hair, which is easy to grow or eliminate, pigment or depigment, newly create or replace, is the key interest to anyone interested and involved in hair research and management of patients with hair loss, alopecia or excessive hair growth. Advances in understanding hair follicle physiology, hair growth and cycling, hair genetics, innovative diagnostic techniques, hair care, hair removal and restoration have significantly contributed to an improvement in patient care and management. Today, the pilosebaceous unit is exemplary in successful translational research with the human being still remaining the best model to study and investigate hair cycling and growth behaviour. Advances in the field of stem cell biology have led to direct clinical impact in projects of hair follicle neogenesis and hair transplantation. Targeted follicular delivery, using the unique role of hair follicle pathways in percutaneous penetration with drug delivery systems, has opened a new dimension in the development of hair growth therapeutics and adjacent indications such as transfollicular vaccination strategies. Advances in experimental and clinical research enable us today to offer our patient innovative diagnostic tools and new testing devices and procedures. These in turn enable us today to validate and quantify efficiently new candidate molecules for treating hair disorders. Trichology today incorporates evidence-based guidelines established for the management of androgenetic alopecia, alopecia areata and hirsutism.