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Hair straightening methods have advanced to improve effectiveness and reduce damage, but still rely on heat and chemicals.

This article reviews the molecular characteristics of human hair keratins, noting their distinct classification from epidermal keratins and the variability in expression that may occur without noticeable hair changes, but reports no new study results.

This study found that a ceramide derived from sphinganine can bind to African–American hair, reducing breakage when applied in a shampoo after relaxing treatments.

This study found that the extraction-resistant structures in hair, feathers, and hagfish teeth are due to ε-(γ-glutamyl)lysine cross-linked proteins, emphasizing their role in maintaining the integrity of these materials.

This study found that human progenitor keratinocytes form unique complements of enhancers and super-enhancers during differentiation and migration, influencing gene expression and skin disease variant enrichment.

In this study, the authors concluded that arabinogalactan proteins recognized by specific antibodies are involved in the differentiation and development of barley root epidermal cells, contributing to root hair development.

In this study, researchers used cryo-electron microscopy to reveal how the natural compound osthole inhibits TRPV3 channels by binding to specific sites, changing the channel's conformation.

This review discusses the impact of COVID-19 on the endocrine system and reports no clinical results; the authors emphasize the need to investigate endocrine damage during and after COVID-19 infection.

This article discusses the enzyme pathways involved in androgenetic alopecia and the role of finasteride in reducing dihydrotestosterone levels to promote hair growth; it reports no new clinical results.

This article reviews adverse skin reactions caused by chemotherapy and cytokine treatments, describing specific and nonspecific reactions, but reports no new clinical findings.

This study found that segmented heterochromic scalp hair associated with iron-deficiency anemia in a teenage girl completely recovered following iron supplementation, suggesting a role for iron in hair pigment production.

This study found that fentanyl accumulates differently in mouse hair after systemic administration compared to external loading, suggesting ionizable functionalities of hair influence drug retention from organic solutions.

This study found that Naked trait mice exhibit a decrease in certain low-molecular-weight proteins in their hair, which contain high levels of glycine and tyrosine, compared to normal mice.

PTH-CBD helps reduce hair loss in mice by stimulating hair growth directly.

This study reports two cases where pili anulati, typically a non-fragile hair condition, showed increased fragility due to androgenetic alopecia, causing hair shaft fracturing in the affected area.

Frequent hairdryer use may worsen hair fragility in people with Pili Annulati.

In this study, hydrophilic EG7 PTK-UR foams promoted better wound healing and tissue integration in a porcine model compared to more hydrophobic PTK-UR variants and a polyester-based alternative, while matching a collagen-based standard.

This study introduces a new test using a pendulum device to assess the bending stiffness of hair fibers, which can evaluate the effects of different hair treatments.

In this study, researchers using a Treg-specific HuR-deficient mouse model found that the RNA-binding protein HuR is crucial for stabilizing Foxp3 mRNA, affecting Treg function and immune regulation, with HuR disruption leading to impaired Foxp3 expression and potential autoimmune dysfunction.

This study on Indian dromedary camel breeds investigated the KRTAP7 protein, finding all four breeds shared an identical gene sequence, with 13 phosphorylation and glycosylation sites influencing hair characteristics, alongside predicted interactions with other biosynthesis-related proteins.

This research observed that Salvianolic acid B (Sal B) significantly promoted hair regeneration in vivo and in vitro, outperforming minoxidil in a mouse model of androgenetic alopecia, by activating Wnt/β-catenin and mTORC2/Akt pathways and upregulating MMPs and MAPKs.

Keloid fibroblasts cause itch and pain by releasing more histamine.

In this study, researchers found that DNMT1-mediated methylation of SRD5A2 in urethral epithelial cells from hypospadias-afflicted rats upregulates proteins associated with cell cycle and mitochondrial function, suggesting SRD5A2 as a potential therapeutic target for hypospadias due to its role in modulating cellular functions.

In this study, researchers found that RORA directly regulates the expression of the Bnip3 gene, which is crucial for hair follicle stem cell health, using rat HFSCs as a model. They propose that targeting RORA could modulate HFSC status.

JW0061 may be a new treatment for hair loss by promoting hair growth through WNT signaling.

This case report highlights the rare co-occurrence of Pili Annulati and Trichorrhexis Nodosa in a Syrian woman, underlining the need for further research into their relationship and treatment.

This study's simulations suggest that replenishing free 18‐MEA could restore damaged hair surface properties, highlighting the importance of optimal fatty acid spacing for maintaining hair integrity.

This study found that decreased expression of the protein transglutaminase 3 with age may lead to reduced zinc levels in hair cuticles, contributing to hair thinning.

This study found that inhibiting PI3 kinase in epidermal stem cells reduces YBX1 phosphorylation, thereby decreasing cellular senescence and enhancing wound healing and regeneration in adult-derived skin models.

This case report describes a unique occurrence of alopecia totalis resulting in pigmented hair growth over superficial scalp veins in an adult female using augmented betamethasone dipropionate ointment.