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.…
Pattern Hair Loss in Women with Polycystic Ovary Syndrome
Polycystic ovary syndrome (PCOS) is a common endocrine disorder affecting women of reproductive age, with an estimated prevalence of approximately 4–7% (using the original National…
Hair singeing: from barbershop staple to niche curiosity
For much of the late 19th and early 20th century, having your hair “singed” was a normal part of a visit to the barber or…
Types of hair dye: from temporary to permanent
Hair dyeing is a ubiquitous cosmetic practice with deep historical roots, and modern formulations have become highly diversified to meet different aesthetic goals, hair types,…
Hair Fiber Structure: An Introduction to the Classical Foundations
Human hair fibers are complex biological composites engineered through a highly specialized keratinization process within the follicle. Although visually simple, a mature fiber represents one…