Shampoos and pH – Does Acidity Really Matter for Hair?
Claims about “pH-balanced” or “acidic” shampoos have appeared in advertising for decades. The implication is usually simple: an acidic shampoo is kinder to hair, while…
Tag: Hair Assessment
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.…
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,…
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…
Sabouraud’s Sign: A Contemporary Assessment of Hair Breakage
Hair breakage can be as distressing for patients as hair loss, yet the two phenomena have very different aetiologies, prognoses and management strategies. Sabouraud’s sign,…
Understanding the “Lonely Hair Sign” in Scarring Alopecias
Hair loss encompasses a vast array of conditions, each with unique clinical presentations, underlying pathophysiology, and therapeutic challenges. Within the domain of scarring (cicatricial) alopecias,…
The Unit Area Trichogram: Methods, Applications, and Comparative Advantages in Hair Analysis
Hair analysis serves as a critical tool in both clinical and research settings, enabling scientists, dermatologists, and other medical professionals to assess hair growth patterns,…
The Hair Pull Test – A Guide to Measuring Hair Shedding and Follicle Health
When it comes to evaluating hair loss, one of the simplest clinical procedures a dermatologist may use is the hair pull test. Despite its straightforward…
An Overview of Head Lice: Biology, Epidemiology, and Management
Head lice (Pediculus humanus capitis) are parasitic insects that infest human scalps, feeding on blood and causing a condition known as pediculosis. This article explores…