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This study's simulations revealed the complex "onion-like" organization of a lipid nanoemulsion droplet containing vitamins A and E for skin delivery, showing distinct concentration patterns of these vitamins within different layers of the nanodroplet.

This review discusses vitamin D's role in hair follicle biology and its association with hair loss but reports no conclusive evidence for its effectiveness as a treatment, indicating the need for further studies.

This review examines the potential roles of vitamin D in the pathogenesis of alopecia areata and suggests that vitamin D analogs like calcipotriol may have therapeutic potential.

This review discusses the role of vitamin D metabolism in skin immunity and wound healing but does not present new results, highlighting the need for further research into its therapeutic applications.

This study indicates that vitamin D3 administration may protect rat hair follicles from radiation-induced damage, as evidenced by maintained follicle numbers and increased Vitamin D receptor activity in treated skin.

This review discusses vitamin D and calcium signaling roles in epidermal stem cell processes essential for wound healing but reports no new experimental results, emphasizing their potential interdependent regulatory mechanisms.

This case report observed that pulmonary arterial hypertension in a man with severe vitamin C deficiency resolved after vitamin C supplementation, suggesting a potential role of vitamin C in managing this condition.

This review discusses the relationship between vitamin D and various skin diseases, highlighting recent findings on its role and the importance of assessing and correcting vitamin D levels, but reports no new clinical results.

This study found that 64.8% of patients with different types of alopecia had vitamin D deficiency, and those with lichen planopilaris and telogen effluvium had higher odds of severe deficiency compared to patients with alopecia areata.

This study found that patients with alopecia areata had significantly lower serum levels of 25-hydroxy vitamin D compared to control subjects.

In this study, researchers observed that the absence of the vitamin D receptor or its ligand-activated transcription in mice did not affect glucose homeostasis or gene expression in islets.

This study found that the vitamin D receptor, but not its ligand, regulates genes involved in hair cycle progression, suggesting a role in integrating hormone signaling pathways for hair and epidermal functions.

This review discusses the potential role of vitamin D deficiency in cardiovascular and renal diseases and suggests that supplemental vitamin D could benefit cardiovascular outcomes, especially in African American and postmenopausal women; it reports no new clinical findings.

In this study, researchers found no significant differences in vitamin B12, folate, and homocysteine metabolism between patients with alopecia areata and controls, suggesting no association with vitamin B12 deficiency.

This study suggests no significant association between vitamin D receptor gene polymorphisms and alopecia areata.

This review discusses inherited forms of vitamin D-dependent rickets and explains their genetic and metabolic causes but reports no new clinical findings.

This study found that adding vitamin A to the diet improved hair follicle density and fur quality in heat-stressed Rex rabbits, involving specific signaling pathways.

In this study, researchers observed that the success of treating hereditary vitamin D–resistant rickets in children depends on the mutation location in the VDR gene, notably with favorable dental development outcomes for those with the p.R391S mutation, despite persistent alopecia.

This study found that the absence of vitamin D receptor-mediated suppression of PPARγ expression causes hair loss in VDR-null mice.

This study examines how the Severity of Alopecia Tool score was used to assess Alopecia Areata in patients while excluding systemic conditions that might affect vitamin D levels, but reports no new clinical results.

This study characterized two siblings with hereditary vitamin D resistant rickets and a mutation in the vitamin D receptor, finding no immune-related disorders despite a defective T cell response to vitamin D.

This review explores how vitamin D3 analogs could target various skin processes and diseases, potentially offering selective and effective treatments beyond psoriasis, but reports no new clinical findings.

This study found that in young male rats, cortisone acetate inhibited body growth and caused alopecia, which vitamin B12 and aureomycin largely counteracted, especially when combined.

This review discusses the role of the unliganded vitamin D receptor in hair follicle cycling and tumor formation in mice and reports no new experimental findings.

This case report observed that while a 4-year-old boy with vitamin D-dependent rickets type II showed biochemical and bone improvement after vitamin D and calcium treatment, his alopecia did not improve.

This study found that using conditioned medium from vitamin D3 pre-activated preadipocytes enhanced hair regeneration in mice by promoting angiogenesis.

This study demonstrated that high doses of L-cystine and vitamin B6 effectively prevent doxorubicin-induced hair loss in mice.

This study found that iron deficiency anemia is a key factor in the development of telogen effluvium, and higher 25-hydroxyvitamin D3 levels in TE patients may be linked to increased UV exposure.

Vitamin D3 may prevent hair loss from chemotherapy, but side effects and cancer cell protection are concerns.

This case report describes a patient with skin and nail hyperpigmentation and premature gray hair due to vitamin B12 deficiency, which were reversed after treatment with cyanocobalamin.