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November 2012 in “Journal of Biomedical Optics” Confocal Raman microscopy can effectively study drug delivery in hair follicles using pig ear models.
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January 2026 in “Journal of Materials Chemistry B” A special solvent helps hydroxytyrosol penetrate skin better, promoting hair growth.
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April 2017 in “Oncotarget” Smaller nanoemulsions can penetrate skin and hair follicles better, which may be useful for delivering drugs and vaccines through the skin.
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April 2011 in “European Journal of Pharmaceutics and Biopharmaceutics” Particles around 100 nm can penetrate and stay in hair follicles without passing through healthy skin, making them safe for use in topical products and useful for targeted drug delivery.
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March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.
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July 2000 in “PubMed” Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.
January 2012 in “Journal of Cosmetics Dermatological Sciences and Applications” Iontophoresis greatly improves skin absorption of certain substances, especially in hairy mice.