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In this study, researchers used SEM/SDD-EDS to identify waterborne minerals like calcium and aluminum in the scalp hair cuticle of individuals using treated or untreated water for hair washing, finding that prior application of coconut oil or conditioners can prevent calcium uptake.

In this study, researchers developed a pH-sensitive dendritic polyglycerol nanogel to measure pH inside hair follicles using an ex vivo porcine ear model, finding that the pH increases from 6.5 at the skin surface to 7.4 in deeper follicle areas, without observed toxicity.

Plant-based ingredients in hair care are being replaced by synthetic alternatives.

This review explores how hair dyes and perms can damage hair structure and notes that while some adverse outcomes like skin irritation and allergic reactions have been reported, evidence from human studies remains inconsistent regarding potential risks, including cancer.

This review highlights that henna (Lawsonia inermis) presents a safer alternative to synthetic hair dyes, though its color range and stability are limited; it emphasizes the need for advanced formulations and global regulatory harmonization to enhance henna's acceptance as a standardized hair dye.

This study concluded that a liquid serum formulation delivered two fluorescent dyes to deeper follicular regions more effectively than nanoparticle systems.

This study reviewed the properties and safety of henna as a hair dye and found it to be safer than synthetic dyes but with limitations in color range and stability.

This article reviews the potential hair-protective effects of Onion and Aloe vera against damage from hair dyes but reports no new experimental results.

This article reviews the properties of cellulose nanocrystals for sustainable development but presents no new experimental results.

This study found that using henna dye positively affected hair cuticula pattern and diameters compared to undyed hair, though the degree of change may vary based on hair phenotype and condition prior to treatment.

This study introduced an eco-friendly enzymatic hair dyeing process utilizing laccase-catalyzed polymerization of hematoxylin, achieving intense, long-lasting color comparable to commercial dyes while enhancing hair strength and offering antioxidant and UV-shielding benefits.

This study found that a CLSM-based approach could semi-quantitatively assess the transdermal penetration behavior of fluorescent dyes with different lipophilicities, offering a tool for early-stage screening of compound penetration.

This review highlights various plant-based and herbal treatments that reportedly help prevent hair loss and encourage hair growth. It also explores the molecular mechanisms, identified plant compounds, recent technologies such as nanoarchitectonics, and patents related to hair growth promotion.

This review discusses hair straightening techniques, products, and safety risks, providing guidance for dermatologists to advise patients effectively; it reports no new clinical results.

This review discusses the need for an updated 'European hair cosmetic series' to include common contact allergens and remove outdated substances based on current evidence and regulations, but it reports no new results.

This review summarizes the volatile components, biological activities, and potential safety concerns of essential oils from various Curcuma species, but reports no new clinical results.

Certain ingredients in personal care products, like formaldehyde, oxidative hair dyes, and sulfates, pose health risks and need careful review.

Chemical treatments can change the scale heights of wool and cashmere fibers, affecting their identification.

The document concludes that the trichogram is a useful tool for diagnosing hair loss and suggests semi-organ cultures for practical trichological research.

This study assessed the effects of chemical treatments on hair fiber integrity and found that conditioners with vegetable oils like jojoba and coconut enhanced hydrophobicity and reduced combing friction except for jojoba, while participants preferred these oil-containing conditioners over the base formulation.

This review discusses central centrifugal cicatricial alopecia, emphasizing its clinical features, potential contributing factors, and treatment options, but does not report new clinical findings.

This study explores the potential of herbal hair dyes as eco-friendly alternatives to synthetic dyes, highlighting their natural coloring ability and additional benefits like scalp nourishment and hair strengthening, while evaluating factors such as pH, spreadability, and color fastness.

This study reported that discarded squid ink was used to develop a high-performance, environmentally friendly hair dye that offers a stable deep black color, UV protection, and preserves hair structure, while showing excellent biosafety in lab tests.

This study evaluated herbal hair care products, including oils, shampoos, and dyes, formulated with ingredients like coconut oil and neem, and found they potentially offer safe and environmentally friendly alternatives to synthetic products with nourishing and antimicrobial properties.

In this study, researchers highlighted that while hair lipids are crucial for hair health and protection, surfactants in shampoos and conditioners can partially remove these lipids, potentially affecting hair structure, though the exact mechanisms remain poorly understood and require further investigation.

This abstract outlines the concept and benefits of herbal hair masks, emphasizing that these plant-based formulations, including ingredients like Bhringraj and Hibiscus, may enhance scalp health and hair strength without adverse effects, but does not report specific research findings.

This study identified the most common plants in hair cosmetics, like shampoos and dyes, with Rosmarinus officinalis L. and Lawsonia inermis L. leading, to serve as a reference for future research and healthcare professionals.

This review explores the potential of herbal therapies and modern delivery methods for managing premature hair greying, highlighting promising plant-based treatments and emphasizing the need for clinical trials to validate their effectiveness.

This study found that scanning electron microscopy revealed significant hair shaft changes in women using straighteners, but not in those using hair dye, suggesting its utility in assessing chemical treatment effects on hair.

This study found that genipin-based pigments, accelerated by riboflavin and blue-light photocatalysis, achieved commercial-level hair dye results with enhanced gloss and excellent color retention while reducing cuticle disruption, offering a potentially safer and faster alternative to traditional hair coloration methods.