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Hair growth can be stimulated by combining certain skin cells, which can rejuvenate old cells and cause them to specialize in hair follicle creation.

Abnormal cuticle and hair shaft medulla cause hair loss in androgenetic alopecia; sonography helps diagnose and manage it.

Horizontal sections of scalp biopsies are good for diagnosing Central Centrifugal Cicatricial Alopecia and help customize treatment.

Mammalian hair scales change from smooth to wavy due to friction.

Early and late matrix progenitors in hair follicles create different cell layers, with early ones forming the companion layer and later ones forming the inner root sheath and hair shaft.

Keratin patterns in hair follicles help understand hair growth and potential hair and nail disorders.

The method shows how hair lipids form specific patterns and their roles in hair structure.

The study concluded that key signs of Keratosis follicularis spinulosa decalvans are changes in terminal hair and vellus hair follicles, which likely start the inflammation and damage to hair follicles.

Curly and straight hair differ in how their internal fibers are arranged.

Human hair contains many proteins, with some being highly abundant and modified.

Recognizing the "bamboo hair defect" is crucial for diagnosing Netherton's syndrome.

Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.

Mutations in the hairless gene cause a rare form of permanent hair loss.

Deleting the CRIF1 gene in mice disrupts skin and hair formation, certain proteins affect hair growth, a new compound may improve skin and hair health, blood cell-derived stem cells can create skin-like structures, and hair follicle stem cells come from embryonic cells needing specific signals for development.

The boy likely has a fungal infection causing hair loss.

The boy with woolly hair nevus had thinner hair and abnormal hair follicles, which improved with treatment but worsened when treatment stopped.

Hair curliness is caused by the arrangement and length of two different cell types.

Scientists found cells in hair that are key for growth and color.

Segmented hair color changes can indicate active alopecia areata.

Most women have a widow's peak and specific hairline features useful for designing hair restoration surgery.

Congenital atrichia with papular lesions causes permanent hair loss and skin bumps from birth.

Dupilumab improved hair and skin in a woman with Netherton syndrome.

EGFR inhibitors often cause dry, brittle hair and eyebrow/eyelash changes.

A man grew hair on his penis, which is not common, and needed surgery to remove it.

An infant with complete hair loss was diagnosed with a genetic disorder affecting hair growth.

Human hair cuticle has five cell layers with specific junctions and granules.

Eruptive vellus hair cysts likely originate from the infrainfundibulum and sebaceous duct.

Researchers found a new gene, hacl-1, that is active in mouse hair follicles during hair growth and may be important for hair biology.