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This study developed and tested a shampoo with semi-permanent dyes designed to gradually cover gray hair, reporting maintained stability and effective gray–black coloration on high-canities hair tresses through eight wash cycles.

Atomic Force Microscopy is a more accurate way to assess hair damage and the effect of cosmetic treatments.

This article introduces a silicone derivative of meadowfoam seed oil and reports its ability to penetrate and repair human hair fibers, suggesting potential use in personal-care products.

In this study, researchers developed and evaluated two formulations of herbal shampoo tablets for their environmental sustainability and beneficial hair properties, finding that both formulations showed promising characteristics for further exploration.

This research formulated and evaluated a multipurpose herbal liquid shampoo using plant-based extracts, which showed good cleansing action, medium foaming, and caused no skin irritation, suggesting it to be a safe alternative to synthetic shampoos.

This study evaluated a multipurpose herbal liquid shampoo formulated with extracts like Horse Gram and Amla, reporting effective cleansing, no skin irritation, and a pH of 5, suitable for scalp and hair.

This review explored the use of six tropical plants, such as Acacia concinna and Garcinia mangostana, as natural active ingredients in shampoos, highlighting their beneficial physicochemical properties and biological activities for hair care and scalp maintenance.

This review discusses the effects of chemical hair straighteners and reports associated side effects like scalp inflammation and hair damage, noting the variability of findings and the need for further research.

This study found that a novel shampoo formulation effectively delivers caffeine to hair follicles, with 8–9% of absorbed caffeine reaching the follicles, suggesting it may support hair retention by enhancing antioxidant activity.

This review found that exposure to pollutants like PM, NOx, and PAHs is linked to various skin and hair disorders, indicating a need for cosmetics with natural adsorbents to reduce pollutant effects, achieving 30-55% removal efficiency.

In this study, three different hair serums were tested for their impact on Telogen effluvium in adult females, finding all effective in reducing hair shedding, with the cytokine-based serum showing the most significant improvement, reducing hair fall by 54.6% without adverse effects.

This review highlights the potential of transcranial photobiomodulation (tPBM) as a non-invasive and affordable treatment for brain diseases, summarizing recent advances and successful protocols based on over two decades of research.

This study created new methods to test how well hair care products clean and protect hair from pollution, finding a wide range of effectiveness among different formulas in removing pollutants and preventing their deposit on hair fibers.

This review highlights the use of natural products in cosmetic-containing herbals for skin and hair care but reports no new clinical results, calling attention to their claimed curative properties and minimal side effects.

In this study, researchers developed hair and foot care products using tofu whey instead of water, highlighting its potential to conserve water and utilize protein-rich waste, though specific efficacy results are not reported.

This source highlights the utility of cationic polymers in haircare products for protecting against hair damage from chemical treatments and grooming, and describes how microfluorometry can measure polymer deposition and penetration on hair fibers.

This study evaluated a new herbal shampoo made from traditional plants and found it to have effective cleansing properties, moderate foam stability, and environmental safety, suggesting it as a favorable natural alternative to synthetic shampoos.

In this study, researchers aimed to develop a herbal shampoo by replacing harmful synthetic ingredients with natural alternatives to improve safety and effectiveness, targeting issues like hair loss and scalp irritation often associated with traditional shampoos.

This study found that treating hair with 1 M sodium hydroxide increases its self-friction coefficient, suggesting potential applications in forming fine frictional fibers for medical uses.

This study successfully developed and validated a reverse-phase HPLC method for accurately determining finasteride and tamsulosin simultaneously in bulk and pharmaceutical formulations.

This study found that polyquaternium-68 at pH 9 achieved the greatest hair deposition, while polyquaternium-44 demonstrated the best wash resistance at pH 6.

In this study, university students given open-label placebo treatment reported reduced psychological distress and lower hair cortisol concentrations during stressful exams, suggesting that these placebos may help manage the physiological and psychological impacts of prolonged stress.

The research developed a herbal shampoo using extracts from Piper Betel and Psidium Guajava leaves, which showed potential in promoting hair growth and managing hair diseases, while replacing synthetic ingredients with safe natural alternatives.

This study found that neuroactive steroids like DHEA and pregnenolone influence cocaine-induced appetence in mice through their interaction with the ς₁ receptor, suggesting a role in individual vulnerability to addiction.

The researchers reported that a novel leave-on treatment containing caffeine, niacinamide, panthenol, dimethicone, and an acrylate polymer significantly increased the diameter and improved the mechanical properties of scalp hair fibers, suggesting it may help mitigate thinning hair.

This chapter reviews formulation principles for creating cosmetic nanoemulsions and applications targeting skin and hair care, but does not present new experimental results.

This study observed that hair density and growth rates vary by location and age, and the presence of thin hairs predominates in younger women with mild patterned hair loss.

This study investigated lipid loss in hair caused by surfactants and found that surface and internal modifications can significantly protect different lipids from depletion, with internal modification preventing 52.0 to 81.3% of lipids in certain groups.

This study found that keratin-based particles were able to recover and enhance the mechanical properties and thermal stability of virgin and overbleached Asian hair, improving its strength and smoothness by around 40%, and demonstrated safety in human skin keratinocytes.

This preliminary study found that poplar seed hair fibers have promising properties for use as environmentally friendly, lightweight insulation, with similar thermal resistance to wool and polyester despite being slightly less effective than down.