Platelet-rich plasma (PRP) has been used for more than a decade in the treatment of androgenetic alopecia and hair loss. Platelets contain a range of growth factors , namely vascular endothelial growth factor (VEGF), insulin-like growth factor (IGF), epidermal growth factor (EGF) and transforming growth factor beta (TGF-beta) which stimulate and support hair growth. Several studies have been performed on patients with conflicting but generally positive results.~Mesotherapy is the technique of injecting a product into the dermis and subcutaneous tissue in order to rejuvenate the skin, induce lipolysis or promote hair growth. Various products exist with different formulations marketed to induce hair growth and sustain hair loss. Even though these products have been used for years, clinical evidence is lacking.~In this retrospective study, we will compare the efficacy of PRP and mesotherapy on hair growth based on the trichoscopic photos and phototrichographic analyses of our patients who underwent these procedures between 2011 and 2020.
This is a comparative retrospective study of the efficacy of platelet-rich plasma injections and injections with commercial products advertised to promote hair regrowth for patients with androgenetic alopecia.