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This review explored the causes of hair graying and evaluated how plant-derived extracts and phytochemicals might alleviate it, noting that certain compounds showed potential in enhancing melanocyte function, reducing oxidative stress, and influencing stress-related pathways based on experimental evidence.

In this study, researchers found that polysulfides in human hair keratin contribute to hair strength and antioxidant capacity, with sulfur supplementation enhancing hair strength and cuticle structure amid oxidative stresses such as UV radiation.

This case report highlights a rare instance of gastric trichobezoar, or "Rapunzel syndrome," associated with trichotillomania, characterized by hair accumulation in the stomach of a patient.

This case report describes a rare instance of a patient with trichotillomania also developing a gastric trichobezoar, leading to Rapunzel syndrome.

This study found that a 50% ethanol extract from marine green alga Chlamydomonas sp. W80 exhibited several bioactive properties, including skin lightening and hair growth promotion effects, with potential implications for bioenergy and high-value coproducts.

This study found that overexpression of sPLA2-X in mice was associated with alopecia and hair follicle abnormalities, highlighting its potential role in hair follicle homeostasis.

This study demonstrates that dermal white adipose tissue regulates human hair growth and pigmentation through hepatocyte growth factor secretion, highlighting potential therapeutic targets for hair-related disorders.

This study demonstrated that novel curcumin analogs CMC2.24, CMC2.23, and CMC2.5 were more effective and less toxic than parent curcumin in inhibiting melanin production in normally pigmented human melanocytes, suggesting potential for skin depigmentation therapies.

This study found that A(3)B(5) downregulates melanin production and suppresses melanoma cell growth by promoting proteasomal degradation of TRP-2.

GNPTAB gene is crucial for normal hair color in humans and mice.

This study found that Sox2 within dermal papilla cells in the hair follicle regulates hair pigmentation, influencing the type and production of melanin.

This study found significant structural and compositional differences in hair affected by alopecia areata compared to healthy hair, using a range of physico-chemical investigation methods.

This study found that extracts from Hom Thong banana peels, rich in phenolic compounds, may inhibit melanin production in human and mouse melanoma cells, showing potential as anti-melanogenic agents comparable to standard treatments like arbutin and kojic acid.

In this study, saponins from Korean red ginseng were found to protect against the harmful effects of airborne particulate matter on human skin cells by reducing oxidative stress, inflammation, leptin expression, and melanin production.

This review discusses the mechanisms and potential benefits of platelet-rich plasma therapy for various skin conditions and reports no new clinical findings.

The researchers concluded that baicalin may promote hair growth and follicle proliferation by activating the AKT pathway, suggesting its potential as a treatment for alopecia.

This article reviews the steps and methods involved in preparing skin tissues for three-dimensional volumetric imaging, highlighting its potential to provide detailed insights into skin structure not possible with traditional 2D histology, but reports no new findings.

This study found that stress-induced inactivation of the enzyme Dicer in melanocytes can cause premature hair greying by preventing proper melanocyte placement and melanin transfer in mice, suggesting the Dicer-miR92b-ItgaV pathway as an important link between stress and grey hair.

This study found that Plerixafor, a CXCR4 antagonist, promotes melanogenesis in melanocytes by increasing MITF and tyrosinase expression and enhancing melanocyte migration, and it effectively restores pigmentation in a mouse depigmentation model without toxicity, highlighting its potential for treating pigmentary disorders.

This study found that mycophenolate mofetil can enhance skin pigmentation in vitiligo models by activating the WNT signaling pathway and increasing melanin-related gene expression.

In this study, researchers found that circulating exosomes from different sheep breeds can significantly alter hair growth in mice, with the source of exosomes influencing hair follicle size and hair diameter, as well as expression of specific hair growth and melanin synthesis markers.

This study reported that fire needle therapy improved skin lesions, increased melanocyte numbers, and boosted melanin levels in a vitiligo mouse model by upregulating the Wnt/β-catenin signalling pathway, suggesting its potential role in treating vitiligo through promoting pigmentation.

This study established a novel in vivo "whisker follicle microinjection assay" using mouse whiskers to evaluate hair growth and pigmentation effects of various chemicals and proteins, identifying minoxidil, ruxolitinib, and RSPO1 as growth promoters, while deoxyarbutin inhibited pigmentation and Nbl1 emerged as a growth inhibitor.

This review examines the role of oxidative stress in male hypogonadism associated with noncommunicable chronic diseases and discusses various management strategies, but it presents no new clinical findings.

This review explores how androgen administration might help alleviate inflammation and mitochondrial impairment in traumatic brain injury but reports no new experimental findings, calling attention to the need for further investigation.

This study found that cashmere goats with greater fasted live-weight gain during the non-growing period had increased cashmere yield and staple length, likely due to higher secondary hair follicle activity.

This review discusses the various determinants of hair quality in healthy individuals and reports no new clinical results; the authors emphasize the need for independent trials with standardized outcomes.

This study found that patients with alopecia, particularly alopecia areata and female pattern hair loss, often have vitamin D deficiency, suggesting that screening for vitamin D could benefit these patients.

This study found that women with female-pattern hair loss had significantly lower serum levels of 25-hydroxyvitamin D compared to healthy controls, but it does not establish causation.

This review highlights the critical role of iron in skin functions and suggests potential dermatologic therapies targeting the iron-skin axis.