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This letter discusses a trichoscopic feature called the color-transition sign for differentiating between alopecia areata incognita and telogen effluvium, and reports no new clinical results.

This study analyzed gene expression changes during the autumn coat color change in mountain hares and found conserved gene regulation with snowshoe hares, highlighting its role in seasonal camouflage adaptation.

In this study, the researchers found that the chemical composition and color of the brown seaweed *Saccharina latissima* varied significantly depending on the harvesting period, site, and cultivation method, suggesting that environmental conditions play a key role in these variations.

This study found that the synthetic thyroid hormone receptor modulator KB2115 significantly prolonged the growth phase of human hair follicles in culture without altering mitochondrial activity, suggesting potential as a safer hair loss treatment compared to traditional thyroid hormones.

This study observed that in wild snowshoe hares, gene expression patterns during seasonal coat color change show a consistent lag between gene expression and visible coat color changes.

This study explored how an educational intervention on reducing phthalate exposure through hair care product choices influenced the hair care practices of pregnant women of color, identifying key life stages and themes related to these practices, including cultural influences, product impacts, and individual autonomy.

This study suggests that Eclipta prostrata may promote hair growth in mice and human dermal papilla cells through regulating FGF-7 and mTOR signaling.

Finasteride and dutasteride increase sexual dysfunction reports.

This study found that EGCG may promote hair growth by inducing and prolonging the anagen phase and delaying the catagen phase in an alopecia model of C57BL6 mice.

The TGF-β family helps control how cells change and move, affecting skin, hair, and organ development.

This study found that the acceleration of endothelial to mesenchymal transition due to loss of Notch signaling led to delayed wound healing and increased scarring in skin wounds.

This study found that exposing adult esophageal epithelial cells to skin stroma can induce them to transition toward a hair follicle identity, with HIF1a playing a crucial role in this conversion process.

This review discusses the roles of TGF-β family signaling in regulating normal and cancer stem cells and highlights the need for further research to develop potential cancer treatments; it reports no new results.

This study identified genetic variations associated with black and white wool color in Gangba sheep, enhancing understanding of wool color genetics and aiding selective breeding for specific wool colors in Tibetan sheep.

This review examines PAK4 signaling pathways in prostate cancer, Parkinson's disease, and melanogenesis, focusing on the potential role of the PAK4-CREB axis, without reporting new clinical results.

This study found that local Unani formulations combined with Hair Rejuvenation Therapy led to significant hair regeneration in three Indian patients with androgenetic alopecia, suggesting potential relief and highlighting the need for larger trials to confirm these findings.

This study found that the culture conditions, not species-specific differences, determined whether sika deer dermal papilla cells adopted a 3D spheroidal or 2D monolayer growth pattern, influencing their hair-inducing ability.

In this study, deleting the Igf1 receptor in specific skin cells of mice affected hair follicle cycling but not overall skin health, suggesting Igf1r's role in hair cycle regulation through Bmp-4 activation.

In this study, overexpression of Wnt5a in mice was associated with the elongation of the telogen stage and inhibition of hair growth initiation, suggesting Wnt5a's role in maintaining hair follicle quiescence.

In this study, researchers found that microRNAs and specific target genes, such as MiR-195 and genes like CHP1, SMAD2, FZD6, and SIAH1, play significant roles in regulating hair follicle initiation in cashmere goats.

This study found that the proteins GDNF, NTN, GFRα-1, GFRα-2, and c-Ret are differentially expressed during various stages of the human hair follicle cycle, with potential implications for hair biology.

This study suggests that increased Wnt signaling may cause melanocyte stem cell exhaustion, leading to hair graying in aged mice by promoting excessive differentiation of melanocytes.

This study concluded that there was no consistent association between endogenous sex hormone levels and atopic dermatitis in the populations studied.

This study demonstrated that dominant mutations in mouse gasdermin A3 disrupt mitochondrial oxidative stress regulation, suggesting a gain-of-function effect on epidermal differentiation.

This study presents evidence that hair matrix progenitors and the enzyme Stearoyl CoA Desaturase 1 may play a role in maintaining the dermal papilla niche via autocrine Wnt and paracrine Hedgehog signaling in mice.

In this mouse study, NF-κB was shown to play a role in hair follicle cycling and morphogenesis, with specific activity patterns differing by hair type and involving noncanonical signaling for zigzag hair bending.

This review highlights the possibility of safely altering hair color through innovative cosmetics by targeting key biological processes in hair follicles, using insights from mammalian pigmentation studies and drug-induced hair color changes as potential pathways.

This study found that irisin, a myokine, increases hair growth by activating the Wnt/β-catenin pathway, enhancing cell proliferation and hair shaft elongation in both human cell and mouse models.

This study found that Wnt5a suppresses β-catenin signaling, inhibiting the transition of hair follicles from the telogen to anagen phase.

In this study, the researchers reported that the hair transection rate during FUE surgery increased significantly by the end of the procedure, suggesting a higher workload affects the surgeon's performance.