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This study evaluated a hair growth gel with Hibiscus rosa sinensis, Eclipta alba, and Solanum nigrum extracts, demonstrating consistent homogeneity, 5 α-reductase inhibitory activity, and no skin irritation.

This article reviews the roles and types of surfactants and ingredients in modern shampoos, discussing their contributions to cleansing, conditioning, and cosmetic effects, but reports no new experimental findings.

In this study, researchers identified an optimal shampoo formulation using Design Expert software, which showed no significant differences in viscosity and foam height, and the physical characteristics met acceptable standards, suggesting its potential for supporting hair health and preventing hair loss.

In this study, DPHC from the brown alga Ishige okamurae demonstrated potential to prevent androgenic alopecia by inhibiting hair loss and promoting hair growth through multiple cellular mechanisms.

In this study, keratin‐based hydrogels incorporating calcium ions were developed to effectively deliver atorvastatin, showing potential for localized anti‐fibrotic therapy through controlled drug release and maintaining drug bioactivity in vitro, supported by thorough physicochemical and mechanical characterization.

This study found that waving virgin human hair with thioglycerol at pH 9.0 using ammonia solution caused less damage than using thioglycolic acid, while maintaining good waving efficiency.

This study explored the potential of human hair keratin as a filtration material, finding that it may effectively absorb the pollutants diclofenac and perfluorobutanesulfonate. The researchers reported significant binding affinities through molecular simulations, supporting further investigation into keratin's use for water purification.

This study found that citric acid treatment can significantly improve the structural integrity and mechanical properties of chemically treated hair, reducing damage by increasing keratin crosslinking density and decreasing crystallized calcium soaps, with varying effectiveness depending on the type of chemical treatment.

This study found that treating Tradescantia stamen hair cells with LiCl disrupts mitotic progression, leading to metaphase arrest, which can be reversed by myo-inositol or CaCl2 addition.

This study found that a quinazoline derivative, SH-340, increased skin barrier-associated factors and inhibited TSLP expression and STAT6 phosphorylation in human primary keratinocytes, suggesting potential benefits for alleviating inflammation and improving skin barrier function in atopic dermatitis.

This study investigated formulations of hair tonic using Hormophysa triquetra seaweed and candlenut extract, finding that the variant with the highest seaweed extract content demonstrated superior physical stability and rapid hair growth in test animals due to its antioxidant properties.

This study concluded that the formulated polyherbal shampoo is a chemical-free product with nourishing, conditioning, cleansing, and antimicrobial effects.

This study found that minoxidil combined with all-trans retinoic acid additively promoted hair growth in vitro by enhancing cell survival and reducing apoptosis compared to minoxidil alone.

This study developed a method using ultra-performance liquid chromatography and mass spectrometry to detect illegal substances in hair loss prevention cosmetics, revealing that some products contained high levels of minoxidil and finasteride, posing safety risks.

This study found that treating damaged hair with maleic-modified amino silicone oil created a highly hydrophobic surface, reducing water content and improving hair's mechanical properties and thermal stability.

This study found that cationic surfactant-based conditioning systems significantly improve hair combability by forming a stable low-friction film on hair surfaces, reducing friction and enhancing sensory performance compared to standard systems, as confirmed by both instrumental and sensory evaluations.

This study found that certain compounds from Chaga mushrooms stimulated the proliferation of human hair follicle cells more effectively than minoxidil, suggesting potential for hair-growth treatments.

In this study, a new delipidisation method that removes over 97% of key lipids from wool rapidly and without yellowing was reported to improve wool processing and printing quality.

This study developed a novel monoclonal antibody, TYHF-1, which specifically reacts with hair keratins but not with epidermal keratins or various other tissue cells.

This study found that topical application of a cosmetic formulation containing capryloyl glycine 4% significantly reduced hair growth and thickness on the forearms of female participants after 120 days, compared to placebo.

This study observed in mouse skin that trichohyalin granules in hair follicles transform into filamentous structures as inner root sheath cells differentiate and cornify.

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.

Polymethylene wax in hair relaxers makes hair smooth and shiny with less damage.

In this study, extracts from Chenopodium quinoa, Glycine max, and Malpighia emarginata demonstrated stability, low toxicity, and effective cleaning potential as surfactants in shampoo formulations, showing performance similar to or better than commercial shampoos in terms of surface and interfacial tension and sebum removal.

New method effectively analyzes finasteride and its stability.

This study analyzed the swelling behavior of human hair during permanent waving treatment, finding that both the microstructure and macrostructure of intermediate filaments swell simultaneously at the initial stage, and while partially destructed by reduction, they are considerably restored through oxidation.

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.

Both amodimethicone and dimethicone copolyol amine are effective hair conditioners.

In this study, EPC-K, a compound with antioxidant and moisturizing effects, was found to decompose significantly under certain conditions, impacting its stability in quasi drug hair-growing products.