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Vitamin D receptor is crucial for hair growth, not vitamin D itself.

This study explores the critical role vitamins A, B7, C, D, and E play in regulating hair growth and protecting against damage, emphasizing their potential in addressing hair issues linked to nutritional deficiencies.

This article reviews evidence suggesting that vitamin D and its metabolite may help protect against nonmelanoma skin cancer, but reports no new empirical findings.

This study found that vitamin D levels were lower in alopecia areata patients, with trichoscopic features like broken hairs and black dots more prevalent in cases with vitamin D deficiency.

This review examines the role of vitamin D and its receptor in skin functions, exploring mechanisms regulating proliferation, differentiation, immunity, and tumor suppression, without reporting new research findings.

This review examines the various functions of vitamin D and its receptor in regulating skin processes, highlighting their role in cell differentiation, immunity, and tumor suppression, but reports no new clinical results.

This study suggests that retinoic acid synthesis and signaling may play a role in maintaining refractory telogen, potentially inhibiting the hair cycle in mice fed varying levels of vitamin A.

This study validated that six out of seven tested topical formulations for alopecia are compatible for 6-month use, suggesting they may be practical for compounding pharmacies.

This study developed and validated a method to analyze active ingredients in hair nourisher products, which was successfully applied to products from the market.

This study demonstrated that mice lacking skin-specific RXRalpha expression developed hair follicle degeneration and alopecia, indicating the importance of RXRalpha/VDR heterodimers in maintaining hair follicle homeostasis.

This study's simulation found that Ascorbyl Tetraisopalmitate penetrates more efficiently through the skin's stratum corneum than via the infundibulum, following different pathways and dynamics in each membrane.

This source reviews advancements in microneedle-based cosmeceutical delivery, discussing new technologies and highlighting a burgeoning area of research involving microneedling combined with stem cell delivery for anti-aging, without finding measurable changes in skin barrier function or appearance during the study period.

In this case report, a 22-year-old female with recurrent alopecia totalis experienced progressive hair regrowth and scalp health normalization over eight months following individualized homeopathic treatment and nutritional support.

The researchers reported finding 53 therapeutic and skincare products for hirsutism and hypertrichosis in Polish pharmacies and drugstores, identifying dienogest and cyproterone acetate as common active ingredients for hirsutism. They noted promising new treatments include eflornithine, acyclovir, licorice, and vitamin D.

In this case study, a woman with high 25(OH)D levels and persistent symptoms showed decreased parathormone after transdermal estrogen therapy, highlighting the importance of assessing both parathormone and estrogen levels in similar patients.

This study found that a vitamin B-group and L-cystine combination therapy improved hair quality and growth in women with diffuse effluvia, with one formulation showing greater efficacy than another and both performing better than placebo.

This narrative review examined the potential of hibiscus leaves and apple skin as natural ingredients for hair tonics and reported their effectiveness in addressing hair loss, highlighting properties like strong antioxidant content and ability to strengthen hair roots.

This study found that ethosome-loaded minoxidil and tocopherol acetate improved hair regeneration and regulated the microenvironment around hair follicles better than commercial minoxidil in androgenic alopecia model mice, showing promise as a treatment strategy.

This study observed that toothpaste and its active constituents promoted hair growth in mice, suggesting their potential for hair growth applications.

This study found that 1,25-dihydroxyvitamin D3 promotes hair growth and regeneration in mice by prolonging the anagen phase and counteracting DHT's inhibitory effects, suggesting its potential therapeutic role for androgenetic alopecia.

PLGA nanospheres in cosmetics improve skin and hair treatment effectiveness.

This study found that alopecia in four children was linked to severe calcitriol-resistant rickets, suggesting this condition should be considered among inherited hair growth disorders.

This review highlights that the epidermis acts as an endocrine organ, synthesizing and responding to hormones such as corticosteroids and Vitamin D, impacting processes like hair growth and immune response, and participating in regulating endocrine balance.

This study found that calcitriol-resistant rickets is associated with alopecia in children and should be considered in the differential diagnosis of hair loss.

In this study, vitamin D3 analogs significantly stimulated hair growth in nude mice with congenital alopecia, whereas the natural form of vitamin D3 did not have the same effect.

This consensus statement discusses guidelines for screening, diagnosing, and treating the Female Athlete Triad, and introduces a risk stratification system to assist healthcare providers with sports participation decisions.

This review highlights the potential of marine macroalgae as a largely untapped resource for developing new active ingredients in the cosmetic industry, emphasizing their role in supporting circular economy models by utilizing waste from other industrial sectors.

The researchers reported that a novel leave-on treatment containing caffeine, niacinamide, panthenol, dimethicone, and an acrylate polymer significantly increased the diameter and improved the mechanical properties of scalp hair fibers, suggesting it may help mitigate thinning hair.

This review discusses the causes of alopecia, including androgenetic alopecia, and potential active ingredients for hair regrowth, but it does not report new clinical results.

This study reports that the loss of the protein Memo in mice leads to a reduced lifespan and suggests that Memo is a key regulator of FGFR signaling and vitamin D production.