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This review explores the mechanisms of hair cell death due to factors like noise, ototoxic drugs, and aging and reports no conclusive clinical results; ongoing research may eventually enable preventive treatments for hearing loss.

Hair can regrow after certain stem cells are lost because other stem cells can take over their role.

In this study, 95% of respondents reported severe hair breakage or loss after using the Rio Hair Naturalizer System, with many experiencing significant and lasting hair loss.

This study's molecular dynamics simulations suggest that electrostatic interactions mainly stabilize peptide binding to human hair keratin, with the protein's dielectric constant significantly affecting free energy calculations.

This study found that exogenous glutamic acid can promote hair growth and keratinocyte proliferation, suggesting a novel signalling pathway in the skin.

This study found that circRNA-0100 promotes differentiation of secondary hair follicle stem cells into hair lineage in cashmere goats by sequestering miR-153-3p, which enhances KLF5 expression.

This study found that applying HHORSC exosomes may enhance the hair inductivity of dermal papilla cells, potentially improving treatments for hair loss.

This study found that the retinoid receptor and PPAR pathway are involved in hair follicle miniaturization in androgenetic alopecia, alongside androgen receptors.

This study identified 21 novel circular RNAs in cashmere goats, with nine significantly more expressed during the anagen phase of hair follicle growth, suggesting roles in hair regeneration and cashmere yield enhancement.

This study compiled an archive of 684 genes associated with monogenic hair disorders, identifying previously unrecognized components of Hippo signaling and proposing a new biologically-grounded disease taxonomy.

This study suggests that m6A-circHECA may influence the physiology of cashmere goats' SHFs both through miRNA pathways and interactions with target proteins, with promoter methylation potentially inhibiting its gene expression.

This study demonstrated that intraoperative bioprinting using a bioink with human adipose-derived extracellular matrix and stem cells achieved successful reconstruction of full-thickness craniomaxillofacial skin defects in rats, promoting wound closure, adipogenesis, and hair follicle-like structure formation within two weeks.

This study used a 3D live imaging system to map cell dynamics in human hair follicles, revealing patterns of cell movement and division that help explain hair fiber extrusion during hair growth.

In this phase 3 trial, baricitinib showed effectiveness and safety in both adolescents and adults with severe alopecia areata, with adolescents achieving higher response rates despite more severe baseline conditions, suggesting the advantages of early treatment.

This study highlights that current research efforts to deliver anti-acne drugs to hair follicles have primarily targeted healthy follicles, overlooking the distinct characteristics of pathologically clogged follicles in acne vulgaris.

This study developed a mathematical model to explore the interactions between hair cycle dynamics and immune system activity in alopecia areata, providing insights into disease progression and potential targets for treatment by simulating immune response effects on hair follicles.

Certain drugs can cause lupus, stopping these drugs is the main treatment. NB-UVB phototherapy clears psoriasis faster when applied three times a week. Monoclonal antibodies and oral pimecrolimus are effective in treating psoriasis. Smoking and drinking are linked to psoriasis in men. No direct link between low iron and hair loss was found. Vaccines are effective against genital herpes and human papillomavirus type 16.

This review highlights the increasing use of trichoscopy, a noninvasive and well-tolerated diagnostic tool, to aid in the accurate diagnosis and management of various pediatric hair and scalp conditions, such as alopecia and other abnormalities.

This study found that glycolytic metabolism and lactate production are crucial for hair follicle stem cell activation, and manipulating these processes can stimulate the hair cycle.

This study demonstrated that enhancing human skin constructs with hair follicles through engineered cell organization and vascularization improved hair growth in immunodeficient mice, suggesting potential advances for treating alopecia and chronic wounds.

In this study, cross-sex hormone therapy affected hair growth patterns differently, with estrogen reducing hair growth in male-to-female transsexuals and testosterone increasing it in female-to-male transsexuals; however, male typical hair diameters were not fully reached in the latter group after 12 months.

This study shows that macrophage-induced TNF signaling can activate hair follicle stem cells and promote new hair follicle formation after wounding by regulating AKT/β-catenin pathways.

This study found that Polygonum multiflorum extract may promote hair growth by inducing the anagen phase in the resting hair follicles of mice.

In this study, increased corticosterone from chronic stress prolonged hair follicle stem cell quiescence in mice, inhibiting regeneration, but restoring Gas6 expression overcame this inhibition.

This study found that sympathetic nerves and arrector pili muscles form a niche that modulates hair follicle stem cell activity, revealing their role in hair follicle regeneration.

This study found that Sonic Hedgehog secreted by hair follicle transit-amplifying cells is essential for dermal adipogenesis and hair follicle growth by acting on adipocyte precursors.

This study found that topical formulations including extracts from Cuscuta reflexa, Citrullus colocynthis, and Eclipta alba significantly accelerated hair growth initiation and completion in rats, indicating potential benefits for treating alopecia.

This review examines the potential of nanoparticles for localized drug delivery via hair follicles but reports no new clinical results, with the authors noting a lack of commercial development despite research progress.

This study found that daily use of 1% pyrithione zinc shampoo modestly improved hair growth over 26 weeks, although these effects were less than those of 5% minoxidil.

This review discusses hormonal influences on hair growth and suggests that understanding hormone-gene interactions may improve treatment of hirsutism and alopecia, but reports no new clinical findings.