Phototherapy for Alopecia Areata: Current Evidence and Clinical Considerations
Alopecia areata (AA) is driven by immune-mediated attack on the anagen hair follicle, with cytotoxic and helper T cells playing a central pathogenic role. While…
Early onset pattern hair loss in men: evidence for a male equivalent to polycystic ovary syndrome
For families where there is a high prevalence of women with polycystic ovary syndrome (PCOS), men who are genetically related have a tendency towards developing…
Lupus Erythematosus–Lichen Planus Overlap Syndrome
Cicatricial alopecia, also referred to as scarring alopecia, encompasses a heterogeneous group of disorders characterized by irreversible destruction of the hair follicle and replacement with…
How Cosmetic Products Are Tested for Their Effects on Hair Breakage
Evaluating how cosmetic products influence hair breakage is a cornerstone of modern hair-science research and product development. Consumers judge hair quality largely through tactile experience:…
Demodex Folliculorum and Its Alleged Association with Hair Loss
Demodex folliculorum is a microscopic mite that inhabits the human pilosebaceous unit and has fascinated, unsettled, and occasionally misled clinicians and patients for more than…
Treatment of Hair Loss in Patients with Polycystic Ovary Syndrome
Polycystic ovary syndrome (PCOS) is a highly prevalent endocrine disorder of reproductive-aged women, characterized by hyperandrogenism, ovulatory dysfunction, and polycystic ovarian morphology. In addition to…
Hair as a Living Archive: How Our Hair Records Heavy Metal Exposure Over Time
When people think about hair, they usually think about appearance, identity, or personal style. From a scientific perspective, however, hair has another remarkable property: it…
Hydrolyzed keratin and its uses for protecting and restoring damaged hair
Hydrolyzed keratin is one of the most widely used “repair” ingredients in modern hair care, especially for hair that has been chemically processed, heat-styled, or…
Early-Onset Androgenetic Alopecia: Definition, Epidemiology, Mechanisms, and Clinical Significance
Androgenetic alopecia (AGA) – most commonly referred to as male pattern hair loss – is the most frequent form of hair loss in adult men.…