The Role of Lifestyle and Environmental Factors in Accelerating Gray Hair Development
Canities, the scientific term for the progressive loss of hair pigmentation, commonly presents as the gradual emergence of gray or white hair in individuals of…
Can diet promote pattern hair loss ?
The short answer is – possibly – but a causal effect has not been conclusively proven. Diet can influence hormonal and metabolic pathways that are…
Scalp hair loss in scleroderma / en coup de sabre
Localized scleroderma (also called morphea) is an immune-driven condition that makes the skin and nearby tissues thicken and harden. When it appears as a narrow,…
Frontal fibrosing alopecia (FFA): background and latest understanding
Frontal fibrosing alopecia is a primary scarring (cicatricial) alopecia that typically presents with progressive recession of the frontal and temporoparietal hairline and frequent eyebrow loss.…
Differences in Human Hair-Follicle Growth Rates: What Varies, Why it Varies, and Why it Matters
Human hair follicles are mini-organs with their own growth kinetics. They cycle through anagen (active growth), catagen (regression), and telogen (rest) and, over many cycles,…
The Hamilton male pattern baldness classification system
In 1951, anatomist James B. Hamilton proposed the first broadly usable scheme for grading the extent of male pattern baldness (androgenetic alopecia, AGA). He organized…
Measuring Scalp Sebum: Principles, Quantification Techniques and Dermatological Relevance
Sebaceous glands are holocrine units that synthesise and excrete a complex lipid mixture – sebum – onto the surface of skin and hair. On the…
Hair Weathering: Mechanisms, Causes, and Prevention
Hair weathering refers to the progressive chemical or physical deterioration of the hair shaft, leading to the loss of structural components and increased susceptibility to…
From Victorian Alarm to Twenty-First-Century Fashion: The Shifting Meaning of the Beard
When men stop shaving, others start talking. Across the past two centuries journalists, preachers, physicians, and social-media influencers, have treated facial hair as a barometer…