May 2026 in “Frontiers in Cell and Developmental Biology” In this study, researchers suggest that hair follicle miniaturization in conditions like androgenetic alopecia may result from impaired conversion of quiescent stem cells to progenitor cells, influenced by the follicular niche, its collagen network, and various mechanical constraints.
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December 2022 in “Skin Research and Technology” This article provides guidelines and indices for a three-point cantilever bending test to measure mechanical properties of hair treated with both conventional and naturally-derived styling polymers, reporting no new experimental results.
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April 2019 in “Nature Communications” This study found that mechanical skin stretching can stimulate hair stem cell proliferation and hair regeneration by activating a complex pathway involving WNT, BMP-2, and M2 macrophages.
This study used quantitative methods to identify new geometric and mechanical parameters of curly and kinky/coily hair, aiming to improve classification and develop better personal care products for these hair types.
September 2015 in “The European physical journal. E, Soft matter and biological physics/The European physical journal. E, Soft matter” In this study, a mechanical model was developed to describe and validate the effectiveness of overnight hair curling, suggesting that combining it with hair fixatives can maintain a desired curl for over a day.
