13 citations
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March 2006 in “International Journal of Cosmetic Science” The study found that a polymer treatment changes the charge on hair surfaces, making bleached hair smoother and less porous.
Modern hair styling products don't repair hair but improve its surface and stability.
39 citations
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August 2017 in “Colloids and Surfaces B: Biointerfaces” 50-nm nanoparticles are better at penetrating skin and targeting hair follicles for drug delivery than 100-nm ones.
33 citations
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September 2019 in “Dermatologic Surgery” Using a special stem cell formula on the scalp once a month for six months helped people with hair loss grow more hair.
47 citations
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April 2017 in “European Journal of Pharmaceutics and Biopharmaceutics” The new dutasteride formula can be applied to the skin, may promote hair growth, and has fewer side effects.