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This case study describes a child with an unusual form of vitamin D-dependent rickets, characterized by alopecia and a deficient response to active vitamin D.

Active vitamin D3 might protect hair follicles from radiation damage.

This study found that a topical vitamin D3 analogue had an anti-proliferative effect on guinea pig skin epidermis.

This review discusses the regulation and function of vitamin D and its receptor in skin cells, highlighting their roles in processes such as proliferation inhibition, differentiation, and innate immunity, but reports no new results.

This study identified a novel V26M mutation in the vitamin D receptor as the cause of hereditary vitamin D resistant rickets in a patient, characterized by severe rickets and an unusual pattern of alopecia.

This study found that 1,25-dihydroxyvitamin D3/VDR inhibits β-catenin's role in keratinocyte proliferation but enhances its role in hair follicle differentiation.

This study found that VDR deficiency in mice leads to various skin pathologies but does not affect the phenotype or function of Langerhans cells.

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 review discusses the metabolism of vitamin D in the body, highlighting its conversion to biologically active forms and involvement in calcium regulation, without presenting new clinical findings.

This study found that a novel R343H mutation in the vitamin D receptor gene impairs its transcription activity, contributing to hereditary vitamin D-resistant rickets and alopecia in the affected family.

This study developed and validated a method to analyze active ingredients like nicotinamide and tocopherol in hair nourisher products using HPLC, which may facilitate quicker market access for these products.

This study reported that an anti-hair loss shampoo containing six active ingredients activated the Wnt/β-catenin pathway in human hair follicle dermal papilla cells in vitro.

This study reported that combining Erbium Glass 1550nm laser therapy with scalp injections of minoxidil, finasteride, growth factors, and vitamins was an effective and safe treatment for androgenetic alopecia, with 96.77% of participants expressing satisfaction, especially those who underwent more than six sessions.

This review evaluates the efficacy and safety of natural hair growth actives set to enter the 2025–2026 market, noting their potential as alternatives to conventional therapies for alopecia but highlighting formulation challenges that may impact their effectiveness.

This review critically evaluated natural hair growth actives for the 2025–2026 marketplace and found they show potential as alternatives to conventional therapies for androgenetic alopecia, with favorable safety and patient acceptance, though challenges such as formulation instability and limited follicular penetration remain.

In a case study of vitamin D-dependent rickets type 2A, researchers observed that while active vitamin D treatment failed to improve bone and laboratory abnormalities, oral calcium lactate significantly ameliorated these issues, although skin and hair problems remained unresponsive.

This study reports that the epidermis is both a source and target for vitamin D3's active form, influencing skin and hair follicle differentiation through a calcium-mediated pathway.

This review found that mesotherapy could improve hair density and reduce hair fall in androgenetic alopecia, especially when combined with other treatments, but lacks standardized protocols and long-term safety data.

This study reported that an ex vivo organ culture system effectively induced aging-related changes in healthy human skin, allowing testing of senolytics like tretinoin, resveratrol, and caffeine.

This study reviews the use and benefits of herbal cosmetics in addressing common hair issues like baldness, hair fall, and dandruff, highlighting that herbal products may offer fewer side effects than conventional beauty products.

This review discusses the application of mesotherapy in dermatology and trichology, noting its potential benefits and issues, but reports no new clinical results.

This study found that a shampoo containing a 6-active ingredient complex increased β-Catenin production in human hair follicle dermal papilla cells to levels comparable to Finasteride, suggesting potential for promoting hair growth. It also showed good cleaning efficacy, volume, and shine in a sensorial study.

This article reviews over-the-counter products and active ingredients marketed for hair loss treatment, noting that many lack robust efficacy evidence except for minoxidil, which has temporary effects, and highlights the caution needed when recommending products to pregnant and breastfeeding women.

This study observed that knocking out the 1α-hydroxylase gene in mice resulted in rickets and growth retardation, demonstrating the enzyme's crucial role in vitamin D function in animals.

This study described the clinical and genetic features of two Iranian siblings with hereditary vitamin D resistant rickets, identifying a specific VDR gene mutation contributing to their symptoms.

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

This review examines the functions of vitamin D and its receptor in skin and explores how these are regulated, reporting no new clinical results.

In this study conducted in Jazan, Saudi Arabia, most participants were aware of vitamin D, zinc, and ferritin deficiencies and their link to hair loss, but only about a third practiced daily sun exposure and vitamin supplement use, highlighting a need for improved health education.

This study suggests that unliganded vitamin D receptors in mice may cause more severe skeletal and mineral ion defects than VDR-null conditions, and vitamin D analogues may restore function in specific VDR mutations.

This study found that calcitriol protects keratinocytes from the cell detachment and apoptosis caused by captopril exposure.