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February 1985 in “Archives of dermatological research” Hair dyes penetrate the scalp very minimally, less than 1%.
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December 2013 in “Journal of Investigative Dermatology Symposium Proceedings” New methods like nanoparticles and microneedles show promise for better skin drug delivery, especially for hair disorders.
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April 2009 in “Journal of comparative neurology” P2X3-IR fibers are widespread in rat skin and likely help detect pain.
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November 2024 in “International Journal of Pharmaceutics X” Desmopressin-loaded liposomes can effectively deliver drugs through the skin, improving bioavailability and patient compliance.
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February 2009 in “European journal of pharmaceutics and biopharmaceutics” Hair follicles help absorb and store topical compounds, aiding targeted drug delivery.
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January 2020 in “Refubium (Universitätsbibliothek der Freien Universität Berlin)” Disrupting the skin barrier and using specific nanoparticles and solvents can improve drug delivery through the skin.
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September 2016 in “Journal of Controlled Release” Nanoparticles can improve drug delivery to hair follicles but struggle to penetrate deeper skin layers.
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August 2025 in “MedComm – Biomaterials and Applications” Liposomal delivery systems improve drug absorption through the skin, offering potential for better treatments.
August 2019 in “Journal of Investigative Dermatology” The study found that tight junctions reach the top layer of the skin's stratum granulosum, not just the second top layer as previously thought.
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December 2015 in “European journal of cell biology” Tight junctions create a barrier in pig hair follicles that controls what can enter the skin.
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February 2014 in “Neuron” Delta opioid receptors help regulate touch sensation by reducing neurotransmitter release in the spinal cord.
July 2013 in “Pharmaceutical Regulatory Affairs Open Access” Invasomes with 0.5% limonene greatly improve skin delivery of finasteride.
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August 2023 in “Frontiers in Immunology” Targeting TRP channels may help reduce excessive scarring.
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January 2016 in “Journal of Controlled Release” Local hypobaric pressure can significantly improve drug delivery through the skin.
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October 2017 in “Colloids and surfaces. B, Biointerfaces” Chitosan-coated nanoparticles can effectively deliver positively charged drugs through the skin using iontophoresis.