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This letter to the editor by Walter P. Unger discusses topics related to hair transplantation and reports no new research findings.

This article reviews the Traditional Chinese Medicine approach to treating androgenetic alopecia and reports no clinical results, suggesting a conceptual imbalance of Yin and Yang as the underlying issue.

In this study, researchers developed thermoresponsive nanogels that effectively penetrate hair follicles and release a model drug when triggered by temperature, demonstrating greater penetration for medium to large nanogels (300–500 nm) compared to smaller ones.

This study found that estrogen can cause reversible suppression of the hair cycle by inducing premature catagen and maintaining the telogen phase without damaging the hair follicle stem cell niche or the signature gene expressions of dermal papilla cells.

In this review, biomaterial-based mechanical strategies were highlighted for their potential to enhance skin regeneration and promote scarless repair, though a comprehensive understanding of their underlying mechanisms is still needed for broader application.

This narrative piece considers how epigenetic factors may influence the processes of skin wound healing, including hair follicle formation, but it presents no new experimental results.

This article proposes a classification for small graft transplants that includes technical factors to improve communication and facilitate comparative studies, reporting no new clinical results.

This study found that a stochastic follicular automaton model replicates hair follicle cycle fluctuations, with deterministic simulations aligning with steady-state levels as follicle numbers increase.

This review reported that home-use laser and intense pulsed light devices effectively reduce hair with significant efficacy and safety, showing 80% hair reduction one year post-treatment, although results can vary for darker skin types and compared to professional devices.

This review discusses past hair transplantation techniques for androgenic alopecia and current research to improve results, but it reports no new clinical outcomes.

This proposal presents a standardized system for naming areas of the balding scalp to improve communication among hair restoration professionals, defining major regions and introducing new landmarks.

This study found that African and Caucasian hair contain the most lipids, and depletion of these lipids leads to less water retention and increased water desorption, with Caucasian hair showing improved breaking tenacity after lipid extraction.

This study reported that the calculated and experimental electronic and vibrational properties of minoxidil were in good agreement, providing detailed insights into its molecular structure and thermal behaviors.

In this study, analysis of hair root status showed similar abnormalities in both primary and secondary syphilis patients, though it remains unclear if these are specific to syphilis.

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

This study found that chemically modifying human hair through esterification or disulfide reduction and alkylation affects the hair's viscoelastic properties, including stability, integrity, and response to moisture.

This article highlights the gap between medically necessary dermatologic gender-affirming procedures and insurance coverage for transgender and gender diverse service members in the US Military, and discusses how dermatologists can support gender-affirming care and address existing healthcare disparities.

This document serves as a resource for pediatricians and primary care providers to guide gender-affirming health care for transgender and gender-diverse youth, including potential medical transition options.

This article highlights studies on cholesterol transporter proteins in hair cycles, epithelial-to-mesenchymal transition in cancer, ovarian hormone effects on cell polarity before implantation, and UV effects on rodent skin, without providing new clinical results.

In this study, stress hormone CRF was found to inhibit hair growth, suggesting that the HPA axis is functional in human dermal papilla cells and contributes to hair loss under stress conditions.

This study showed that the stress hormone CRF inhibits hair growth and induces hair loss by affecting both the proliferation of human dermal papilla cells and hair follicle function.

This study found that Urticadioica L ethanol extracts enhanced hair growth and reduced catagen transition in human hair follicles in an ex vivo organ culture model.

This article proposes a standardized naming system for areas of the balding scalp to improve communication among hair restoration professionals, but it reports no clinical results.

Cell movements and forces shape feather growth in chicken skin.

This study found that the SAFE System may improve follicular unit extraction by reducing follicle transection rates and broadening patient eligibility, with only minor adverse reactions reported.

In this study, the novel powered FUE method was associated with faster harvesting time and lower graft transection rates compared to manual FUE in male patients with alopecia.

In this study, researchers reported that a new skin-responsive FU excision device consistently succeeded in all patients of African descent, showing a mean graft transection rate of less than 10%, with skin thickness and firmness identified as major factors affecting graft attrition rate.

This case report describes an 8-year-old child with penile tourniquet syndrome due to a constricting thread, which led to partial distal penile amputation and required surgical intervention.

This article presents modifications to the microfollicular hair transplant process, reporting innovations at each step to enhance results based on over 1000 cases at the authors' center.

This study found that hair shaft exit angles in patients undergoing strip hair restoration increased after the tumescence injection and further increased after strip excision.