research Three-dimensional architecture of macrofibrils in the human scalp hair cortex
Human hair has a complex, variable structure with a consistent matrix and double-twist pattern.
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research Evaluation of Hair Density and Hair Diameter in the Adult Thai Population Using Quantitative Trichoscopic Analysis
Thai people's hair density decreases with age and varies by scalp area, but hair thickness stays the same regardless of age or scalp area.
research Hair resistance to mechanical wear
Hair's resistance to wear varies by ethnicity and treatment, with less wear indicating stronger hair.
research Hair density, hair diameter and the prevalence of female pattern hair loss: reply from authors
Hair loss caused by longer latent hair cycle and sudden miniaturization, not gradual follicle size reduction.
research The changing patterns of hair density and thickness in South Korean women with hair loss: clinical office-based phototrichogram analysis
South Korean women with hair loss have lower hair density and thickness compared to healthy women.
research Hair through the female life cycle
Women's hair generally gets thinner and less dense starting in their mid-thirties, with hair loss becoming more common as they age due to both genetics and environment.
research Investigation of aging effects in human hair using atomic force microscopy
Aging makes hair thinner and rougher, with less clear edges.
research Hair Diameter Variation in Different Vertical Regions of the Occipital Safe Donor Area
Hair thickness decreases from the upper to lower areas of the back of the head, affecting hair transplant results.
research Exploring Mechanical Niches Identified by Hair Follicle Compression and How These Transduce Proliferation and Differentiation Cues in Epidermally Derived cells.
Less stiff collagen promotes higher cell growth in hair follicles.
research Contribution of hair density and hair diameter to the appearance and progression of androgenetic alopecia in Japanese men
Hair thickness matters more than density for baldness in Japanese men over 25.
research Hair Examination
Understanding hair structure and growth is key for diagnosing hair diseases accurately.
research [A three-dimensional observation of human hair tissue treated by modified trypsin-HC1 method].
The method allows detailed observation of hair tissue structures.
research Some electron microscope observations on hardening in the human hair follicle
The hair follicle structure is more complex than thought, with new findings on protein formation.
research 비탈모자과 탈모자의 휴지기 모근의 형태학적 분석 - 여성을 중심으로 -
People with hair loss have smaller hair roots and less fat tissue.
research Hair from wheat stalk in the larynx
research A Comparative Cross-Sectional Study of Hair Density and Hair Shaft Diameter of Different Severities of Anterior Scalp Marginal Traction Alopecia in Women
Traction alopecia reduces hair density and thickness; proper hair care can help prevent it.
research The ultrastructure of the interfollicular epidermis of the hairless (hr/hr) mouse
research Avaliação quantitativa em cortes histológicos transversais do couro cabeludo
The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.
research The Morphological Structure of Female Telogen Effluvium and Alopecia Areata Hairs According to Curriculum Contents of Beauty Art Department
The study confirmed that changes in hair structure in women with hair loss conditions matched what is taught in beauty college trichology courses.
research Age-related changes in the hair follicle and hair shaft in women in the parietal region
As women age, hair follicles decrease in number and hair width tends to reduce.
research Prospective ultramorphological characterization of human hair by optical coherence tomography
OCT can identify hair structures, but chemical treatments can damage them.
research Trichotillometry: the quantitation of hair pluckability as a method of nutritional assessment
Malnourished people have weaker hair that is easier to pluck.
research Human hair keratins
research Field use of hair epilation force in nutrition status assessment
Hair pluckability can help assess protein nutrition status.
research Cryo-Electron Microscopy of Trichocyte (Hard α-Keratin) Intermediate Filaments Reveals a Low-Density Core
Trichocyte filaments have a low-density core and may include proteins for hair structure.
research Haarverlies volgens het vrouwelijk patroon (female pattern hair loss).
Female pattern hair loss causes thinning hair on top of the scalp, treatable with limited success.
research Hard X-ray Microscopic Images of the Human Hair
High-resolution x-ray images showed three main structures in human hair: medulla, cortex, and cuticle.
research Characterization of hair lipid images by argon sputter etching-scanning electron microscopy
Hair texture changes with age due to varying levels of lipids.
research Hair loss.
Up to 50% of scalp hair can be lost before it appears thin, and treatment is only needed for hair loss caused by diseases or deficiencies.
research Mechanical Behaviour of Scalp Hair in Premature and Full-Term Neonates
Premature infants have less elastic hair than full-term infants.