February 2024 in “Universal Library of Innovative Research and Studies” In this study, researchers found that the primary cause of slippage and detachment of keratin capsules in hair extensions is the re-contamination by oily residues from the hairdresser's hands, rather than the use of hair care products like masks or conditioners.
December 2025 in “The American Journal of Interdisciplinary Innovations and Research” This study operationalizes a four-step workflow for selecting donor hair for capsule extensions, translating surgical trichology insights into an extension-specific protocol to enhance natural hair optics and biomechanics, suitable for premium extension services.
May 2020 in “International journal of dermatology and venereology” This study introduces the term "hair matrix cyst" for a cyst with both pilomatricoma and epidermal cyst characteristics, highlighting its potential for misdiagnosis among similar skin conditions.
January 2008 in “Chinese Journal of Aesthetic and Plastic Surgery” In this study, the authors found that rabbit hair material ground for 8 hours had better suitability and histocompatibility for injectable soft tissue augmentation compared to other tested formulations.
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July 1983 in “Acta Dermato Venereologica” This study describes a method for serially cultivating adult human hair follicle keratinocytes using a specific growth substrate and cryogenic storage, enabling subculture and immunofluorescence studies.