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In this study, polydopamine emerged as a safe and effective alternative to traditional hair dyes like PPD for dyeing gray hair permanently, showing resistance to detergents and causing less toxicity and hair loss in mice.

This review examines the pH levels of various shampoos and reports no new clinical results, highlighting the potential importance of labeling pH values on shampoo packaging for hair and scalp health.

This review discusses traction alopecia in individuals with Afro-textured hair and emphasizes the importance of education to prevent this condition, but it reports no new clinical results.

In this study, an ammonia-free and PPD-free permanent hair dye was tested on 50 ethnically diverse females, showing no cases of contact dermatitis and significant improvements in hair shine, color, moisturization, porosity, and combability after two dyeing sessions.

This study reviews current research to better understand how various environmental and lifestyle factors, collectively known as the exposome, impact hair health and aging, acknowledging that the detailed mechanisms remain partially understood.

This article presents a comprehensive overview of hair microscopy techniques and their diagnostic potential for systemic and cutaneous disorders, emphasizing its usefulness in resource-limited settings and highlighting the underutilization of this non-invasive method due to lack of awareness.

The document concludes that the trichogram is a useful tool for diagnosing hair loss and suggests semi-organ cultures for practical trichological research.

This study developed and tested a shampoo with semi-permanent dyes designed to gradually cover gray hair, reporting maintained stability and effective gray–black coloration on high-canities hair tresses through eight wash cycles.

This study assessed the effects of chemical treatments on hair fiber integrity and found that conditioners with vegetable oils like jojoba and coconut enhanced hydrophobicity and reduced combing friction except for jojoba, while participants preferred these oil-containing conditioners over the base formulation.

The researchers investigated the potential of Suaeda maritima root extract for hair care and growth promotion. They reported high levels of saponins and antioxidants, showing significant biological activity in vitro, but noted a lack of anti-fungal effects against certain fungal species.

This review explores the application of nanotechnology in cosmetics, highlighting its role in enhancing skin penetration, sustaining drug action, and protecting against UV radiation, while also addressing regulatory considerations and potential exposure routes.

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.

In this study, a bleaching protocol was developed to evaluate hair repair products, revealing that K18® and Olaplex® improve hair brightness and lightness, with distinct impacts on hair fiber properties.

This study developed a biocompatible hair-dyeing technology using a dark polyphenol complex, which demonstrated effective hair coating, improved mechanical strength, and strong antioxidant properties while maintaining high cell viability.

This study found that in lactating Holstein cows, hair from the tail switch, which grows faster and is more sensitive to cortisol changes, is ideal for measuring hair cortisol levels.

This study found that a non-ionic ethosomal carrier system significantly improved the delivery and adsorption of black tea extracts onto hair surfaces in vitro, suggesting its potential as a hair dye and protective agent.

In this study, researchers used SEM/SDD-EDS to identify waterborne minerals like calcium and aluminum in the scalp hair cuticle of individuals using treated or untreated water for hair washing, finding that prior application of coconut oil or conditioners can prevent calcium uptake.

This review discusses the connection between alopecia areata and trace element imbalances, noting deficiencies in elements like zinc and selenium, but reports no new clinical findings.

This study used atomic force microscopy to identify significant morphological differences in hair from patients with lichen planopilaris compared to healthy controls, noting more scratches, uneven edges, and pitted scales in affected hair, which may aid future research on the condition.

This study reports that frontal fibrosing alopecia in Brazilian patients is common in postmenopausal women and often associated with hypothyroidism and facial irritation from cosmetic products.

In this study, upper-bulge epidermal stem cells in mouse hair follicles were shown to play a role in forming tactile sensory units by creating an extracellular matrix that supports nerve interactions.

This study found that a dietary supplement improved hair strength and shine in participants with hair damage from breakage.

This study found that traction alopecia risk was higher in adults than children and increased further when traction was combined with chemically relaxed hair.

This review presents standardized methods for assessing and tracking hair loss in alopecia areata but reports no clinical results, with the authors noting time limitations in clinical practice.

This study found that chemical treatments like perming, dyeing, and bleaching significantly alter amino acids and lipids in human hair, which may impact hair strength and quality.

This study found that proteomic analysis can distinguish hair samples across different ethnicities and body regions based on keratin protein levels, which may aid forensic hair identification.

This mini-review summarizes the Trichoscan as a sensitive tool for measuring hair growth parameters, demonstrating its effectiveness in detecting treatment response in androgenetic alopecia but noting some practical limitations.

This study found that platelet-rich plasma was effective for hair regrowth in women with androgenic alopecia, though less so than minoxidil, but it was associated with improved quality of life responses.

This study found that the Pseudomonas sp. T5-6-I strain significantly increased selenium accumulation and root hair density in Brassica oleracea, highlighting its potential for phytoremediation and biofortification.

This article reviews common skin reactions associated with epidermal growth factor receptor inhibitors and reports no new clinical findings, emphasizing the need for understanding nursing care and oncodermatology.