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This review explores the hair follicle microbiome's interaction with the immune system, discussing its potential clinical implications for scalp health and disease but reports no new clinical results.

This review highlights the possibility of safely altering hair color through innovative cosmetics by targeting key biological processes in hair follicles, using insights from mammalian pigmentation studies and drug-induced hair color changes as potential pathways.

This study discusses how redox imbalance, specifically through reduced Insulin-like Growth Factor-1 mediated by the transcription factor JunB and sphingolipid metabolism changes, contributes to skin aging by depleting stem cell pools and altering the extracellular matrix, ultimately impacting skin integrity and function.

This review of seborrheic dermatitis highlights the role of complex immunoinflammatory processes in its pathogenesis and discusses emerging treatments, such as PDE4 inhibitors, JAK inhibitors, and microbiome-targeted therapies, which may benefit patients with severe or treatment-resistant forms, according to the authors.

This paper reviews the development of transdermal drug delivery systems for skin diseases, from first to fourth generation, and highlights ongoing challenges and the importance of clinical trials, but provides no new clinical results.

This review found that different monosaccharide compositions in polysaccharides from 72 medicinal plants are linked to varying biological activities, with glucans, galactans, mannans, fructans, and pectins showing significant roles in immunomodulation, antioxidant effects, and other health benefits.

This study evaluated methods to administer betulin in in vivo experiments and found that olive oil, food-grade lard, and other carriers increase betulin absorption in Wistar rats, while monitoring blood levels may aid future clinical research.

Panthenol is more effective than hydrolyzed protein at improving hair roughness and reducing breakage.

This study suggests that while some evidence indicates potential efficacy of placental products for hair growth and inhibiting hair loss, the current scientific evidence is scarce and of low quality.

This study found that hydrolyzed wheat proteins extensively penetrated both untreated and chemically treated hair, primarily occupying areas like the endocuticle and cortex.

This study found that hydrophobic amino acids from egg white hydrolyzed protein and L-phenylalanine effectively penetrate deep into the human hair fiber, increasing specific contents in both virgin and bleached hair.

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 study compared hydrolysed wheat protein, L-arginine, and hydrolysed collagen for their effectiveness in enhancing the tensile strength of heavily bleached hair.

This study found that a new hybrid polymer made from hydrolyzed protein, alkyl chain, and silicone helped prevent discoloration and improve moisture feel and manageability in dyed and damaged hair.

This study found that a new hybrid polymer containing hydrolyzed protein and silicone effectively improved moisture feel and prevented discoloration in dyed hair, particularly benefiting damaged hair.

This study found that conditioner agents reduced the damage caused by oxidative hair dye, specifically improving protein retention and combability in treated Caucasian hair.

This study found that an herbal hair gel formulated with natural ingredients like aloe vera and essential oils showed stability, effectiveness, and aesthetic appeal, suggesting it could be a viable, safe alternative to synthetic hair gels, with potential for future production and clinical evaluation.

This study found that different polypeptides, including KP peptide and hydrolyzed keratin, can improve the mechanical properties of damaged hair under varying conditions, with reduction environments and cysteine content influencing their effectiveness.

This abstract highlights that maintaining healthy, voluminous thin hair involves using gentle care products, such as shampoos, conditioners, and masks containing specific ingredients like hydrolyzed keratin, collagen, and panthenol, to improve manageability, strength, and moisture retention.

In this study, the authors concluded that a hydrolyzed eggwhite protein treatment promoted the reconnection of disulfide bonds in excessively bleached hair, after reduction and oxidation processes in permanent waving.

This study reported that an anti-hair loss shampoo containing six active ingredients activated the Wnt/β-catenin pathway in human hair follicle dermal papilla cells in vitro.

This study found that a shampoo containing a 6-active ingredient complex increased β-Catenin production in human hair follicle dermal papilla cells to levels comparable to Finasteride, suggesting potential for promoting hair growth. It also showed good cleaning efficacy, volume, and shine in a sensorial study.

In this study, adding conditioning agents PA1, PA2, and PA3 to light blonde oxidative hair dyes improved combability and protein retention of light brown hair without affecting tensile strength, though PA1 and PA2 offered enhanced thermal protection.

The researchers reported that adding specific combinations of hydrolyzed proteins to silicone-free shampoo improved hair conditioning properties by reducing friction and increasing surface adsorption and penetration into hair, compared to protein-free alternatives.

This study found that the newly developed hair product K-30 increased both protein content and weight in chemically damaged hair to levels similar to healthy hair, unlike traditional products that only temporarily improve texture.

This study assessed three materials—L-arginine, hydrolysed keratin, and cystine-silanol copolymer—ex vivo for their potential to reduce undesirable effects of hair bleaching, such as damage to hair proteins.

In this study, combined treatment with transglutaminase and keratin significantly repaired damaged hair by improving its structural properties, reducing swelling, and enhancing crosslink activities, as evidenced by microscopy and spectroscopy analyses.

In this study, topical application of keratin extract from wool promoted hair growth in mice by reducing the time for initiation and completion of growth phases and improving hair quality.

In this study, disruptions in phospholipase A2 activity in Arabidopsis thaliana significantly impaired the plasma membrane localization of PIN proteins, affecting auxin transport and root development.

This study concluded that GLCAT14A-C genes are crucial for the function of glucuronic acid transfer to AGPs in Arabidopsis, affecting various growth and reproductive traits such as seed germination and root hair growth.