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In this study, coudability hairs were identified as a useful marker for assessing disease activity in patients with alopecia areata and may serve as an alternative to the hair-pull test.

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 cationic surfactant-based conditioning systems significantly reduce friction on hair fibers, improving wet and dry combability by forming a stable film layer on the hair’s surface, as verified by both instrumental and sensory evaluations.

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 bleaching significantly damages hair structure and increases combing difficulty, while dyeing with emulsifiers can partially reduce damage and improve combability, yet both processes cause notable protein loss.

This study found that the acidic hair straightening formulation at pH 1.0 improved hair alignments and straightening effectiveness more than pH 2.0, but it weakened fiber strength and affected hair color and composition.

Several companies launched new hair care ingredients in 2011 to improve conditioning, color retention, combability, and heat protection.

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 paper reviews various techniques for measuring the physical and mechanical properties of human hair fibers, emphasizing their importance in developing effective cosmetic products.

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 model study describes how interactions between hair keratin and various materials alter hair's physical and mechanical properties by affecting noncovalent bonds.

This study found that after using Mintop Shampoo for 10 wash cycles, significant improvements in hair detangling, combability, static reduction, shine, softness, smoothness, bounce, tensile strength, and percentage elongation were observed compared to the initial damaged state.

In this study, an ammonia-free and PPD-free permanent hair dye was tested on 50 ethnically diverse females, showing no cases of contact dermatitis and significant improvements in hair shine, color, moisturization, porosity, and combability after two dyeing sessions.

In this study, the multifunctional Hair BB Cream containing botanical extracts and other ingredients improved hair combability, increased shine and strength, and provided UV protection, highlighting its potential as an effective hair care product.

This study found that adding certain conditioning agents, including jojoba oil and lauryl PEG/PPG‐18/18 methicone, to ammonium thioglycolate straightening emulsions protected Afro-ethnic hair from protein loss and improved resistance to breakage.

This article reviews trichoscopic signs of chemotherapy-induced alopecia, including exclamation marks, but reports no new clinical results.

This study reviews the use of trichoscopy in diagnosing and monitoring alopecia areata, highlighting that certain trichoscopic findings like yellow and black dots, exclamation mark hairs, and others, provide valuable insights into disease status and treatment response.

This study reviewed the usefulness of trichoscopy in diagnosing and monitoring alopecia areata, noting that the technique identifies specific hair features like yellow and black dots, which are linked to the disease's chronic nature and treatment response.

This review examines the use of dermoscopy for diagnosing common hair disorders and highlights its importance, but it does not report new clinical results.

This study identified key dermoscopic markers such as yellow dots, black dots, broken hairs, and coudability hairs, which were associated with a poorer prognosis in alopecia areata patients.

This study found that yellow dots seen under dermatoscopy are a sensitive and specific indicator of treatment response in alopecia areata, showing significant reduction as early as four weeks.

This study found that specific dermoscopic markers, including yellow dots and black dots, are associated with poor prognosis in alopecia areata patients, while vellus hair indicates a more favorable outcome.

This case study describes an uncommon variant of coudability hair in alopecia areata, where intermittent inflammatory processes result in alternating bands of lighter color and reduced hair shaft calibre.

This case report describes a girl with uncombable hair syndrome who showed significant improvement in hair combability and growth rate after two cycles of oral biotin supplementation.

In this study, oral biotin improved hair growth, strength, and combability in a child with uncombable hair syndrome, while hair in two others slowly improved without biotin.

This study found that a conditioner containing Spirulina platensis and Ascophyllum nodosum extracts improved hair shine and reduced combability force after 28 days of use.

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.

This study found that hair care formulations containing vegetable oils like Brazil nut and olive oil improved hair strength, shine, and combability more effectively than those with silicone.

In this study, incorporating a novel amino acid compound into a hair-straightening formulation improved humidity-resistant straightening and enhanced the surface and mechanical properties of hair fibers, including increased bending stiffness, reduced friction, and better shape retention under high temperature and humidity conditions.

In this study, shampoos containing sodium lauroyl methylaminopropionate showed superior coacervate formation and lubrication on wet hair, outperforming other amino acid surfactants and suggesting potential for creating low-irritation, high-performance hair products.