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This letter discusses the various risk factors associated with premature greying of hair, highlighting genetic predispositions, nutritional deficiencies, stress, and lifestyle factors, while noting a lack of conclusive data on effective interventions, as detailed in the reviewed studies.

This review discusses the role of melatonin in skin and hair physiology, highlighting clinical evidence for its potential benefits in treating androgenetic alopecia, but does not report new results.

This review discusses supplements used to alleviate side effects of chemotherapy, highlighting various natural remedies, but reports no original clinical research findings.

Experts discussed hair care, genetic hair defects, hair loss treatments, nail surgery, lupus treatments, skin infections, and cosmetic allergies.

This study found that intradermal administration of PRP combined with oral biotin significantly increased hair regrowth in men with androgenetic alopecia, without notable side effects.

This review discusses biotin and biotinidase deficiencies, their symptoms, and methods of medical management, without presenting new clinical findings.

This review outlines the various processes activated by the peptide GHK-Cu in tissue remodeling and reports improvements in skin and wound healing but notes a need for further study to fully understand these mechanisms.

This review discusses the potential role of vitamins and minerals in managing non-scarring alopecia but reports no clinical results; the authors advocate for further controlled trials to explore these relationships.

This review discusses how changes in hair and skin may indicate underlying vitamin deficiencies and emphasizes the need to identify populations at risk for these deficiencies; it reports no new results.

This study observed that dandruff in Indian women is associated with a distinct scalp microbiome, including specific bacterial and unknown Malassezia species, with implications for nutrient homeostasis and cell-host adhesion pathways.

This study found that oral biotin supplementation improved outcomes in a mouse model of inflammatory bowel disease by reducing inflammatory cytokine production and enhancing intestinal barrier integrity, suggesting potential therapeutic benefits for IBD patients.

This review covers dermatological conditions experienced by ice-skating athletes due to cold exposure, infections, and inflammation, providing no new clinical findings and emphasizing diagnosis and treatment strategies.

This review discusses potential cell sources and bioengineering strategies for regenerating hair follicles with functional cycling, reporting no new results.

This study developed PiSCES biosignatures that distinguished alopecia areata patients from controls, revealing enhanced basal TCR signaling and a potential disease-specific signaling network signature.

In this study, researchers found that a polyphenolic extract from Annurca apples, high in procyanidin B2, increased hair growth, density, and keratin content in healthy subjects after 2 months of use, and stimulated keratin biosynthesis in vitro.

This article reviews various causes of hair loss linked to systemic factors, noting that careful history and examination can lead to accurate diagnosis, but reports no new clinical results.

This article explores how various nutrients and metabolic processes impact wool and hair follicle function in animals but reports no new experimental findings.

This article reviews current hair loss treatments, proposing a hypothesis that a combination of drugs, supplements, and therapies may effectively manage hair loss, but presents no new clinical results.

This study found that crossbred lambs fed liquid diets with reconstituted cow's milk initially grew wool without crimp, with crimp resuming two weeks post-weaning.

This review discusses the use of nutraceuticals in dermatology for preventing and reversing signs of skin aging, but it reports no new clinical results.

This study found that hemodialysis patients taking water-soluble vitamins had a 16% lower mortality risk compared to those not taking any, but the specific supplementation needed remains unclear.

AGA is a genetic, hormonal hair loss treated with finasteride, minoxidil, and supplements, but new compounds are being developed.

This study found no significant difference in serum biotin levels between patients with telogen effluvium and control subjects.

Certain micronutrients may improve hair and nail health, but more research is needed to confirm their benefits.

This systematic review found no consistent evidence supporting the effectiveness of biotin supplementation for alopecia treatment unless there is a documented deficiency.

In this study, researchers developed a carboxylated β-cyclodextrin formulation to enhance finasteride's physicochemical properties, achieving an encapsulation efficiency of about 85% and indicating potential for controlled drug release in therapeutic applications. Their findings suggest this inclusion complex could improve delivery of hydrophobic drugs like finasteride.

In their review, the authors found no strong evidence supporting biotin's effectiveness as a hair supplement, noting a significant disparity between its popularity and scientific backing, with available studies showing no substantial benefit over placebo.

In this study, researchers developed WS Biotin, a new water-soluble form of biotin, and found that it significantly improves water solubility compared to free biotin and enhances hair-related keratin expression, gene activity for hair growth in vitro, while also reducing melanin content in skin cells.

This study observed that hirsutism, alopecia, and acne are the most common androgenic symptoms in women with PCOS, with treatments including biotin, minoxidil, and over-the-counter acne medications.

A balanced diet with key nutrients and possible supplements can help manage post-COVID-19 symptoms.