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This review focuses on the roles of amino acids, peptides, and proteins in cosmetics, highlighting their importance in skin health and their potential for development in personal care products due to their unique properties and biocompatibility.

This review discusses the clinical applications and adverse effects of 5-alpha reductase inhibitors for treating benign prostatic hyperplasia and androgenic alopecia, noting controversies around their implications for other diseases, without reporting new results.

This study found that 2MbisP increases epidermal thickening more rapidly than atRA in rhino mice, while both compounds similarly reduce utricle size.

This study found that tannic acid accelerated wound healing in rats by modulating inflammatory cytokines, increasing growth factors, and activating the Erk 1/2 pathway.

This study found that two new progesterone derivatives showed higher antiandrogenic effects and 5α-reductase inhibition than finasteride in hamsters, particularly reducing seminal vesicle weight and flank organ size.

This study found that sinapic acid demonstrated antioxidant and anti-inflammatory effects against UVB-induced damage in human keratinocytes, suggesting its potential as an anti-aging cosmetic ingredient.

This study reported high analytical performance of an RMP for DHT quantification, with the ability to differentiate between 5α-DHT and 5β-DHT isomers, making it suitable for routine assay standardization and clinical sample evaluation.

This study found that Piper nigrum leaf extract showed in vivo anti-androgenic activity and potent 5α-reductase inhibitory effects, with piperine and (−)-cubebin identified as active components.

This case report discusses a 27-month-old girl with vitamin D-dependent rickets type II, who showed minor improvement in skeletal features and alopecia after high-dose oral calcium and vitamin D3 treatment.

Active oxygen scavengers can reverse the suppression of hair cell growth caused by androgens.

This review discusses the effects of dietary protein and its components on cholesterol, essential fatty acids, and possible health consequences, but presents no new clinical findings.

This review discusses the steroidogenic properties of human skin and suggests that impaired steroidogenesis may be linked to conditions like acne, rosacea, atopic dermatitis, and androgenic alopecia, but reports no new clinical results.

This study used a zebrafish model and advanced mass spectrometry to identify 11 metabolites of epristeride, revealing significant effects on purine metabolism and aromatic amino acid biosynthesis, which may aid in developing anti-doping detection methods.

This study found that mackerel fermented fish oil protected human keratinocyte cells from UVB-induced oxidative stress by scavenging free radicals and reducing cellular damage.

New techniques and findings in dermatologic surgery show improved pain management, safer liposuction, better hair transplantation, and effective treatments for skin conditions.

This study observed that the ethyl acetate extract of Equisetum debile showed high activity against 5α-reductase and lipid peroxidation with no cytotoxicity on dermal papilla cells.

This review reports on the traditional and ethnopharmacological uses of Ziziphus jujuba Mills, noting its increasing global popularity for treating various ailments, but highlights that its acceptance into the European Pharmacopoeia remains unresolved due to scientific and regulatory challenges.

This study found that Runx1 in hair follicle stem cells modulates lipid metabolism, impacting membrane organization and enhancing signal transduction for cell proliferation in both normal and cancer epithelial cells.

This study found that compounds 21–23 and 25 exhibited strong 5α-reductase II inhibition in vitro and significantly reduced rat prostate weight, performing comparably to finasteride.

This review discusses the phytoconstituents and biological properties of T. orientalis and T. occidentalis, but reports no new clinical results.

This review explores various substances with potential antiandrogenic effects for treating acne, highlighting evidence for isotretinoin, and discusses the future consideration of 5 alpha-reductase inhibitors as antiandrogens.

This review explores the phytochemistry and phytopharmacology of Urtica dioica but reports no new experimental findings, focusing on its traditional uses and range of bioactive constituents.

This article outlines the synthesis of spiro[cyclohexane‐1,2′‐[2 H ]indene] derivatives similar to known steroid 5α‐reductase inhibitors, but it does not report experimental findings.

This study identified CD201+ fibroblast progenitors in mouse skin that regulate wound healing through differentiation into specialized cell types, with retinoic acid and hypoxia influencing this process.

This article discusses the various roles of steroids in vertebrate organ systems and notes several glucocorticoids that were among the Top 200 Drugs by sales in the 2010s, but it reports no new clinical findings.

This review summarizes the bioactive compounds and pharmacological functions of Cynomorium songaricum Rupr., emphasizing its potential in developing health-related products, and notes that further research is needed.

This study demonstrated that steroidal carbamates 7–10 altered mRNA expression related to lipid metabolism in hamster flank organs and inhibited 5α-reductase activity without binding to the progesterone receptor.

This study highlighted the promising health benefits of taxifolin, a flavonoid with antioxidant, anti-inflammatory, and other protective effects found in foods like onions and milk thistle, though more research is needed to fully understand its mechanisms and safety for human therapeutic use.

This study found that adding Cinnamomum zeylanicum bark extract to a powder shampoo formulation significantly improved antioxidant activity without affecting its cleansing ability, although its clinical effectiveness remains to be tested.

This study found that an ethanolic extract from the microalga Tetrathelmis tetrathele exhibited anti-inflammatory effects, promoted the proliferation of certain skin and hair cells, and inhibited 5α-reductase activity, suggesting its potential as a therapeutic agent for preventing alopecia and enhancing scalp health.