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In this study, the reconstructed skin epidermal model derived from hair follicles showed gene expression and enzyme functionality consistent with native human skin, suggesting its viability for studying skin metabolism and potential toxicity of dermo-cosmetic ingredients.

This study reported that ritlecitinib effectively improved hair regrowth in JAK inhibitor-naïve adolescent patients with severe alopecia areata, achieving significant reductions in SALT scores within 24 weeks, but was less effective for patients who had previously been treated with baricitinib.

This study examined the genetic basis for the curly hair trait in Mangalitza pigs, finding two specific genetic variants that contribute to this distinctive phenotype through autosomal dominant inheritance.

This study developed a 3D engineered hair follicle model that mimics the native hair bulb and may aid in drug screening for hair growth therapies.

This case report describes white piedra infection of the scalp hair with a synergistic bacterial infection in two US native sisters, highlighting its relevance in diagnosing scalp hair concretions despite its rarity in North America.

In this study, the researchers explored a hair dye gel formulated with Indonesian native plant extracts and found it produced stable brown shades on bleached hair, with the most preferred dark brown achieved at a 12% concentration, and showed no skin irritation.

This study found that trichoscopic quantitative parameters reliably indicate the severity of female pattern hair loss and complement the Sinclair scale by offering a more objective and reproducible grading system.

This review discusses hair follicle organoids as emerging models for studying hair biology and disorders, emphasizing their promise for bridging basic research and clinical applications, but reports no new results.

This study operationalizes a four-step workflow for selecting donor hair for capsule extensions, translating surgical trichology insights into an extension-specific protocol to enhance natural hair optics and biomechanics, suitable for premium extension services.

This study developed in vitro methods to regenerate hair follicles and erector muscles by mimicking their native structures and mechanical conditions, reconstructing hair follicle-like structures and forming muscle-like tissues.

The new device improves human hair follicle cell growth and differentiation.

A 4kb fragment of the desmocollin 3 promoter targets gene expression to specific skin and hair follicle areas.

This study found that plucked hair follicles can serve as a practical and scalable source for regenerative medicine, as researchers successfully isolated and expanded keratinocytes and mesenchymal stem cells for potential cell-based and cell-free therapies, demonstrating significant wound-healing bioactivity in vitro.

The shampoo and conditioner improved dry, damaged hair significantly after three uses.

This study found that murine epidermal stem cells implanted subcutaneously in a biodegradable carrier could survive and differentiate into structures resembling native dermis without significant rejection in recipient mice.

This review highlights the importance of using 3D scaffolds in vitro to support hair follicle regeneration, emphasizing how these structures help maintain cell function and mimic the natural environment, which is crucial for developing hair follicle organoids for transplantation.

Hair fibers interact through classical forces, which are influenced by treatments and products, important for hair care and other applications.

In this study, researchers reported that the application of refolded human K31 keratin protein significantly improved diameter, mechanical strength, and smoothness of chemically damaged hair after a single treatment.

The researchers reported that keratin 33A is a structural protein specific to goat cashmere hair, with increased winter expression in high-cashmere-producing breeds.

This study found that knocking down P-cadherin expression in cultured human hair follicles recreates the hair abnormalities seen in patients with hypotrichosis with juvenile macular dystrophy.

This article discusses the concept of hair cloning through cultured follicular cell implantation but provides no new experimental results; it highlights ongoing interest among hair restoration professionals and the public.

This study found that components in the kernel of Prunus mira Koehne, such as vitamin E and β-sitosterol, may promote hair growth in mice, possibly involving the Wnt/β-catenin signaling pathway.

This study presented a method for female hairline transplantation that connects the Diverting Point and Part Line to recreate a natural hair flow, enhancing aesthetic outcomes by providing a more natural and feminine hairline.

This study observed that SY red pericarp rice extract promotes hair growth, inhibits 5α-reductase, and enhances hair regeneration in mice, with the extract being safe from cytotoxicity and irritation, indicating its potential as a natural hair growth promoter.

Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.

In this study, the researchers found that transplanted hair follicles undergo significant morphological changes, including a thickened dermal sheath and increased hair shaft diameter, which are associated with altered follicular vascularization.

This study proposes a simple fluorescence method to evaluate hair damage and protection, suggesting that emissive properties of hair can aid in substantiating cosmetic claims.

This article provides contact information for a dermatology department and an international hair restoration society but reports no clinical research results.

In this study, researchers identified 18 genetic associations with scalp and facial hair traits in Latin Americans, including novel loci for hair greying and balding, with implications for understanding hair evolution.

In this study, skin stretching significantly increased the delivery of retinyl ascorbate into the dermis, while sealing hair follicles did not affect absorption through native skin.