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In this study, researchers evaluated the binding of keratin-associated proteins and α-keratins to human hair fibers, finding that chemical preactivation significantly enhanced binding to natural hair, while perming altered binding characteristics and increased penetration depth.

This study evaluated a hair mask containing rice germ oil GX-N and ferulic acid on damaged hair and found that rice germ oil GX-N improved hair characteristics after bleaching, UV, and heat exposure, but adding ferulic acid did not provide extra benefits.

In this study, researchers found that polysulfides in human hair keratin contribute to hair strength and antioxidant capacity, with sulfur supplementation enhancing hair strength and cuticle structure amid oxidative stresses such as UV radiation.

This review examines hair removal practices prior to genital gender affirming surgery, noting current variations and offering a practical laser hair removal approach, but reports no new clinical results.

This review examines the devices, mechanisms, risks, side effects, and regulatory differences in laser hair removal, particularly highlighting the lack of regulation in South Africa and its implications for patient safety.

This review discusses advancements in laser hair removal technologies and the potential role of radiofrequency for certain hair types, but it reports no new clinical results.

This study describes a planned multicenter randomized controlled trial to assess the safety, tolerability, and pharmacokinetics of subdermal gestrinone pellets in patients with deep infiltrative endometriosis-related pelvic pain, but it does not report any findings yet.

This study found that melanin granules in black human hair are key dyeing regions for oxidative hair coloring, as confirmed by nanoscale mass spectrometry analysis detecting deuterium ions.

This study developed a novel hair-straightening shampoo incorporating a polyphenol–inorganic sulfate redox agent, finding that it effectively straightens hair while enhancing strength and reducing damage due to its protective polyphenol coating.

This review discusses the effects of chemical hair straighteners and reports associated side effects like scalp inflammation and hair damage, noting the variability of findings and the need for further research.

The study found that Anagen grow, a herbal serum, promotes hair growth elongation and may inhibit the alpha reductase enzyme, suggesting it as a safe, effective alternative to finasteride and beneficial alongside minoxidil for reducing scalp dryness.

This study reported that fermented grapeseed oil may enhance hair permeability and improve strength and color retention in chemically treated hair compared to regular grapeseed or silicone oils.

This review assesses the effectiveness of various alopecia areata treatments and concludes that only contact sensitizers like diphenylcyclopropenone and squaric acid dibutylester have shown efficacy in evidence-based studies, but it reports no new clinical results.

In a study on mice, researchers found that exposure to artificial light environments causing circadian misalignment impaired hair growth by reducing the hair growth rate during the anagen phase, suggesting these light conditions as a potential risk factor for hair loss.

In this study, repetitive subcutaneous administrations of a conditioned medium from stem cells significantly suppressed hair graying in mice exposed to X-ray irradiation, likely through antioxidative mechanisms involving HGF and potentially VEGF.

Follow these guidelines to safely and effectively use energy-based devices in aesthetic treatments.

This study found that chemically treated hair, particularly when subjected to both acid straightening and bleaching, experiences more significant structural damage when exposed to heat, highlighting key changes in both the internal and surface components of hair fibers.

This article discusses various aspects of hair and scalp health, ancient philosophical perspectives on hair, and causes of hair disorders in children, without reporting new clinical results.

This review discusses the potential of protein-based cosmetics, including keratin-based particles and fusion proteins, to improve hair properties such as strength and shape, but it reports no new clinical results.

This study investigated the effects of wool-derived hydrolysed keratin peptides on relaxed textured hair and found that mid- and high-molecular weight peptides improved mechanical strength and reduced breakage in different humidity conditions.

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This review highlights the potential of nanotechnology-based formulations in hair care and treatment, emphasizing how these innovative materials can enhance the stability, efficacy, and safety of active compounds while addressing the limitations of conventional formulations.

In this study, incorporating a novel amino acid compound into a hair-straightening formulation improved humidity-resistant straightening and enhanced the surface and mechanical properties of hair fibers, including increased bending stiffness, reduced friction, and better shape retention under high temperature and humidity conditions.

This study reported that discarded squid ink was used to develop a high-performance, environmentally friendly hair dye that offers a stable deep black color, UV protection, and preserves hair structure, while showing excellent biosafety in lab tests.

In this study, the novel thiol-Michael click perming molecule, MA2-CySS, achieved repeatable perming with reduced oxidative damage, preserving hair keratin's structure while maintaining efficiency comparable to traditional oxidative methods.

This study found that hair steroid profiling is a feasible, non-invasive alternative to serum analysis in adolescents, with androgen levels correlating more strongly with body size and composition in boys than girls.

In this study, researchers observed that even a single session of hair dyeing can damage hair fibers, with significant worsening of mechanical properties and protein composition after three or more consecutive treatments, emphasizing the need to consider the cumulative impacts of dyeing on hair health.

This review highlights various plant-based and herbal treatments that reportedly help prevent hair loss and encourage hair growth. It also explores the molecular mechanisms, identified plant compounds, recent technologies such as nanoarchitectonics, and patents related to hair growth promotion.

This review discusses the need for an updated 'European hair cosmetic series' to include common contact allergens and remove outdated substances based on current evidence and regulations, but it reports no new results.