Overview of Hair Biology, Research Models, and Evaluation of Hair Regrowth Potential In Vitro and In Vivo

The document discusses the significance of hair as a symbol of personal identity and the growing interest in researching hair loss and regrowth due to its prevalence and the limitations of current treatments like minoxidil and finasteride. It highlights the use of natural remedies such as grapefruit, Polygonum multiflorum, soapberry, and rosemary for hair growth stimulation. The study emphasizes the use of animal models, particularly mice and rats, due to their genetic similarities and shorter life cycles, to understand the physiology of hair, hair loss, and regrowth cycles. This research aims to gather insights that can be applied to human hair regrowth treatments.