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This article reviews various studies and suggests that melatonin, produced both naturally in the skin and applied topically, may offer significant protection against environmental damage, making it a promising candidate for skincare therapies.

This review examines melatonin's potential effects on human skin and hair follicle pigmentation, highlighting the need to confirm findings from cell cultures in physiological tissue contexts.

This study found that melatonin implants at specific times of the year may increase cashmere production in young Australian cashmere goats by altering their growth cycles.

This ex vivo study reported that melatonin significantly improved certain aging biomarkers in aged human skin, including reduced mTORC1 activity, increased fibrillin-1, and enhanced collagen and elastic fiber organization, though other key biomarkers remained unchanged.

This review examines recent research on melatonin's biochemical activities, particularly in skin health, but reports no new clinical results and emphasizes its potential for future medical applications.

This study found that melatonin may enhance goat cashmere growth by activating Wnt signaling and regulating stem cell pluripotency through mechanisms involving NOGGIN and BMP4 pathways.

This paper explores how melatonin interacts with various magnetic fields, noting that it can enhance certain positive health effects or inhibit destructive processes, but may also exacerbate conditions like multiple sclerosis by intensifying inflammation.

This review summarizes recent findings on the combined use of chitosan and melatonin, highlighting their synergistic effects in wound healing, anti-cancer therapies, and tissue engineering, with further potential applications in cosmetology, aesthetic medicine, and veterinary practice.

This study found that treating cashmere goat kids with melatonin significantly increased secondary hair follicle density, improving cashmere quality and yield, likely through mechanisms involving the MAPK signaling pathway.

This study found that exogenous melatonin improved cashmere fiber quality and yield in goats by enhancing antioxidant capacity and reducing pro-aging cytokine expression in secondary hair follicles.

This source explores melatonin's roles beyond circadian rhythm regulation, reporting its benefits in skin conditions like dermatitis, melasma, alopecia, psoriasis, and skin aging due to its antioxidant, anti-inflammatory, and immunomodulatory properties, while highlighting the need for more trials on optimal dosing and long-term safety.

This study found that in cashmere goats, melatonin treatments enhanced cashmere growth by stimulating secondary hair follicles, increasing follicle density, and improving yield and quality, highlighting key genes and metabolic pathways involved in this process.

In this study, maternal melatonin implantation in pregnant rabbits reduced hair follicle cell apoptosis and increased hair follicle density in their neonatal offspring, suggesting a beneficial impact on hair follicle development mediated through specific molecular pathways.

In this meta-analysis, researchers found that melatonin did not affect primary hair follicles or litter size in goats but was positively correlated with secondary follicle growth, suggesting potential relevance for studying hair growth mechanisms and human alopecia.

This chapter reviews the clinical features, diagnosis, treatment, and prognosis of various non-hormonal, non-infectious alopecias without providing new clinical findings.

This review discusses Alopecia X in plush-coated dogs, noting that while treatments like melatonin and laser therapy have shown promise, the condition is generally considered a cosmetic issue without the need for therapy.

This review discusses the controversial non-inflammatory alopecia known as alopecia X, highlighting its unknown etiology and the variable effectiveness of various proposed treatments, but reports no new results.

This review discusses the role of intrinsic skin signals, rather than serum signals, in regulating melanin synthesis and hair pigmentation, but reports no new experimental data.

Hair color production is closely linked to the active growth phase of hair in mice and may also influence hair growth itself.

This study found that silencing clock genes BMAL1 or PER1 in human hair follicles increased melanin content and melanocyte activity, suggesting these genes influence pigmentation.

This study identified 63 genetic loci associated with male-pattern baldness, uncovering genes and pathways that may help develop treatments and suggesting its connection to other human conditions.

This article discusses the role of neurohormones and neuropeptides in hair follicle pigmentation and outlines promising neuroendocrinological strategies to address greying and damage, but reports no new clinical results.

This study reported that a low color temperature light (1900 K) may have positive effects on melatonin secretion, eye protection, wound healing, and hair regeneration compared to higher temperature lights.

The researchers found that HOXC13 regulates different keratin proteins in a mixed manner, with certain SNPs impeding this regulation, while also demonstrating negative-feedback by HOXC13 and positive regulation by LEF1 and melatonin on the HOXC13 promoter.

This research reported that melatonin may serve as a potential treatment for both rosacea and Alzheimer's disease by regulating inflammation and vascular signaling pathways, demonstrating effectiveness in reducing symptoms associated with rosacea-like skin lesions in experimental settings.

This review examines treatments for chemotherapy-induced alopecia, reporting that combining mechanical and chemical interventions may offer some benefits, though the evidence is not yet definitive.

This study examined gene expression in cashmere goats and identified key pathways and molecular regulators that influence hair follicle growth stages and melatonin's role in promoting cashmere growth.

This study provides evidence that long-term deregulation of the circadian rhythm in humans affects the regenerative properties of skin and hair precursor cells by altering clock pathway protein expression.

In this study, bromocriptine's inhibition of prolactin promoted secondary follicle development during anagen in cashmere goats, likely via changes in specific gene expressions, despite not affecting fiber characteristics or primary follicle activity.

This article discusses the diagnostic approach to symmetrical alopecia in dogs, particularly focusing on conditions affecting the endocrine glands and hair follicles, without presenting new research results.