January 2024 in “International Journal of Trichology” This case report detailed two instances of plica polonica, an acquired hair matte condition, attributing it to factors like drug effects and hair care neglect, but emphasized not labeling affected patients as unable to self-care.
3 citations
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June 2019 in “Journal of cosmetic dermatology” In this study, tresses treated with pH 1.0 acid straightener showed better straightening but more damage to hair properties compared to those treated with pH 2.0.
This study proposed a new standardized in vitro framework using human hair tresses to evaluate cosmetic hair product performance and found significant improvements in hair breakage, tensile strength, shine, volume, and frizz control compared to a control group without such changes.
2 citations
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July 2013 in “Acervo Digital da Universidade Estadual Paulista (Universidade Estadual Paulista)” This study found that the shampoo formulation with Polyurethane-14 and AMP-acrylates copolymer improved curl definition and reduced frizz and volume in natural and curly hair tresses compared to the control.
April 2026 in “Cosmetics” 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.