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This chapter reviews nanotechnology in cosmetics, detailing various formulations, performance assessment methods, and evolving regulations, while discussing safety, stability, and effectiveness concerns; it reports no new experimental results.

This study reports that transplantation of an ESCs-collagen-chitin biomimetic membrane leads to successful in situ skin regeneration, including hair follicle cell proliferation and formation of dermatoglyphs, in nude mice with full-thickness skin defects.

This study found that MDP hydrogel significantly accelerated wound healing and improved tissue formation in diabetic mice compared to a standard clinical hydrogel and control buffer.

This review examines hair cosmetics, including shampoos and conditioners, for their formulations and effects, but reports no new clinical findings; it emphasizes the importance of dermatologist knowledge in treating diverse hair conditions.

This review discusses lipid-polymer hybrid nanoparticles for dermatological applications, outlining their structural and formulation advancements, but reports no new clinical results and calls for further research on their therapeutic potential.

This study found that an injectable ceria-based nanocomposite hydrogel improved wound healing and epithelium regeneration, including hair follicle and adipocyte tissue formation, in full-thickness skin wound models.

This review examines beta-catenin's role in stem cell renewal, lineage selection, and tumor formation in the epidermis and reports no new experimental findings.

This study found that cultured dental papilla cells from various mammals can induce hair follicle regeneration and influence tissue formation, with outcomes dependent on donor age, tooth type, and host environment.

In this study, ACF sponges with 10% fucoidan significantly promoted wound healing and hair follicle regeneration in rats, showing improved hemostatic and antibacterial performance compared to other formulations.

The researchers evaluated scientific data on the usage and pharmaceutical applications of ascorbic acid derivatives, such as ascorbyl-6-palmitate and ascorbyl-2-glucoside, highlighting their development into stable delivery platforms to overcome ascorbic acid's instability and formulation challenges.

This study investigated the integration of crystal engineering and microneedle technology for androgenetic alopecia treatment, finding that microneedles loaded with newly developed Kopexil multicomponent crystals reduced drug diffusion rates in vitro compared to standard formulations.

This article reviews current osteoporosis treatments, focusing on the potential of selective androgen receptor modulators and other agents to enhance bone formation, but provides no new clinical data.

This study found that a mesenchymal stromal cell-derived regenerative extracellular matrix (rECM) significantly accelerated wound closure and improved healing in diabetic mice, also enhancing nerve and blood vessel formation compared to controls.

This review discusses advances in understanding hair and hair follicle structure, gene expression, and molecular signals in hair formation, without reporting new clinical findings.

This study developed an antimicrobial microneedle patch for delivering apoptotic vesicles to treat infected wounds, which was found to effectively reduce bacterial growth and accelerate scarless healing, including the rapid formation of mature hair follicles in just 8 days, a previously unreported early outcome.

This study found that integrin-linked kinase is crucial for various epidermal functions, including differentiation and barrier formation, and also plays a previously unreported role in melanocyte development and function.

This article reviews current understanding of dermal fibroblasts' structure and function, highlighting their crucial role in connective tissue formation and repair, which is important for selecting effective treatments for age-related skin changes.

This study found that structural defects in the hair shafts of sighthounds with bald thigh syndrome are related to a downregulation of genes and proteins essential for hair shaft formation.

This study highlights that hydrogel formulations unexpectedly prolonged healing in trials, pointing to a need for design based on detailed pathophysiological insights rather than empirical methods, and suggests technologies like AI materials optimization and 3D bioprinting to aid their clinical use for cancer survivors.

This study found that a silver ion cross-linked thiolated protein hydrogel, O3G7, significantly enhanced acute wound healing in mice by increasing collagen content, neovascularization, and reducing inflammation markers compared to a control group.

This review discusses recent advancements in formulating electrospun nanofibers as wound dressings, emphasizing their advantages in incorporating bioagents for improved healing, but reports no new clinical results.

This review reports on recent surfactant-based niosome formulations, including those with polysaccharides, for versatile drug delivery applications such as ocular, oral, and transdermal settings, while discussing their limitations and potential prospects.

This review highlights the potential of nanotechnology-based formulations in hair care and treatment, emphasizing how these innovative materials can enhance the stability, efficacy, and safety of active compounds while addressing the limitations of conventional formulations.

This review examines advancements in hydrogel formulations aimed at preventing dermal fibrosis and promoting scarless wound healing, highlighting their role in regulating myofibroblast differentiation and controlling the wound microenvironment.

This study found that a hydrogel formulation containing insulin, chitosan, and hydroxypropyl methyl cellulose improved wound healing in diabetic mice, promoting faster wound closure and organized tissue formation, with in vitro tests showing no cytotoxicity and enhanced cell migration.

Keratin peptides can change hair shape gently without harsh chemicals.

This study found that nanoemulsion-based formulations, such as nanoemulgel and NFs, might serve as promising topical delivery systems for treating inflammatory diseases, potentially offering an alternative to traditional nonsteroidal anti-inflammatory drugs, which are associated with adverse effects.

This study found that using drug microplates in transdermal finasteride films enhances aqueous solubility and skin permeation compared to films with pure finasteride.

This review explores how nanoparticles enhance cosmeceutical formulations, analyzing their roles in transporting active ingredients, and highlights the progress and challenges in using nanotechnology for beauty and health products.

This study found that the unique crest feather formation in Polish chickens is driven by a 195-bp duplication in the HoxC10 gene region, which alters gene expression by modifying the genomic structure, suggesting a mechanism for diverse integumentary appendages in birds.