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This review highlights the use of microneedling devices and patches to deliver cosmetic agents through the skin, noting their applications in skin rejuvenation and safety considerations such as potential skin irritation and infection.

This source reviews popular cosmeceutical ingredients for skin care, noting that while they are popular among consumers for anti-aging benefits, many lack robust clinical evidence for their efficacy and safety, as they are not regulated by the FDA.

This study found that Japanese patients with alopecia areata had higher body mass index and retinol intake, with retinol intake being a predictor of hair loss severity.

In this study, the authors found that targeting mTORC1 with rapamycin inhibited TPA-induced skin tumor promotion by affecting keratinocyte proliferation, including critical stem cell populations in the mouse epidermis.

This review discusses the therapeutic effects of vitamins, highlighting risks such as liver damage from prolonged high doses of vitamin A and hypercalcemia from excessive vitamin D, while noting a case of allergic reaction to vitamin B12.

This article reviews various aspects of skin cancer, including animal models, molecular mechanisms, immunity roles, and potential chemoprevention strategies, but reports no new experimental results.

The study found that finasteride increased endoplasmic reticulum stress and reduced fertility in rats, effects that were alleviated by the administration of DA-9401.

In this study, PKC ε transgenic mice exposed to ultraviolet radiation showed increased hair follicle stem cell frequency and altered gene expression compared to wild-type mice, suggesting a potential role in skin cancer susceptibility.

This study undertook a retrospective chart review to examine the link between the severity of female pattern hair loss and abnormal cholesterol levels in patients from a specialty alopecia clinic, but results are not reported.

This study found that a high sesquiterpene C. aeruginosa extract significantly reduced axillary hair growth in women compared to placebo with no apparent adverse effects.

In this study, premature coronary artery disease in Indians under 40 was linked to factors like dyslipidemia, low HDL-C, smoking, and central obesity, with cutaneous markers significantly associated.

In this study, rat vibrissa follicles transplanted into mice demonstrated survival, partial sympathetic nerve reinnervation, and increased norepinephrine levels 37 days post-implantation, suggesting potential for hair growth despite not returning to normal nerve function.

In this case series, researchers observed that patients with inflammatory bowel disease often experienced vitamin C deficiency, which was linked to symptoms of scurvy, highlighting the need for dietary counseling.

This study suggests that supplemental testosterone therapy in men with hepatitis C virus may be associated with a modest reduction in hepatocellular carcinoma risk, challenging concerns about its potential to increase cancer risk.

This study observed that two patients treated with interferon α-2b and ribavirin for chronic hepatitis C experienced complete and reversible straightening of their natural curly hair, which recurred with treatment resumption.

This study found that dermatological adverse events from interferon-alpha/ribavirin treatment for chronic hepatitis C are associated with factors like older age, pre-existing skin conditions, cirrhosis, and the use of pegylated interferon formulations.

This study suggests that label-retaining cells in the hair follicle contribute to follicular renewal, indicating a specific role in the hair cycle by proliferating during the late telogen phase.

This study identified a new heterozygous mutation in the connexin 26 gene (c.263C>T; p.Ala88Val) in a premature neonate with KID syndrome, who later died from complications.

This study introduced the C-CAT, a new assessment tool for central centrifugal cicatricial alopecia, and found that established treatments improved symptoms in most patients over six months.

This study found that adding hydroxypropyl cellulose to minoxidil formulations significantly increased scalp retention and penetration compared to other formulations, potentially leading to reduced application frequency and improved efficacy.

In this study, Maas-Szabowski and Szabowski revealed that c-Jun and JunB transcription factors, as well as granulocyte macrophage-colony stimulating factor, regulate human keratinocyte growth and differentiation in fibroblast–keratinocyte interactions.

Stem cells in eccrine glands could be used for regenerative medicine.

Stem cells in mouse nails are found in the nail matrix and may control nail growth.

In this study, exposure to high concentrations of all-trans retinoic acid caused apoptotic cell death in mouse hair follicle stem cells, suggesting its potential for removing unwanted hair.

This study found that all-trans and 9-cis retinoic acids increase steroid sulfatase activity in HL60 cells through mechanisms involving RARα/RXR heterodimers and multiple signaling pathways.

This study found that the CYP3A4 rs4646437 genotype was significantly associated with ALT elevation in Japanese patients undergoing asunaprevir plus daclatasvir therapy for chronic HCV infection, suggesting genotyping may help in monitoring patients safely.

This study investigated a Labrador Retriever with paw pad hyperkeratosis and identified a unique de novo heterozygous missense variant in the GJB6 gene, suggesting its potential role in the condition, analogous to Clouston syndrome in humans, although differences between species may provide further insights.

This study found that fentanyl accumulates differently in mouse hair after systemic administration compared to external loading, suggesting ionizable functionalities of hair influence drug retention from organic solutions.

This article reviews the use of spironolactone in dermatology for conditions like female acne, suggesting it may reduce antibiotic and isotretinoin use, and stresses its long-term safety.

Diphencyprone initially increases mouse hair growth, then slows it, possibly due to changes in specific protein levels.