August 2007 in “Microscopy and Microanalysis” Hair fibers break by cuticle cell slipping, shape changing, cuticle fraying, and surface cracking when stretched under specific conditions.
3 citations
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June 2019 in “Journal of cosmetic dermatology” Lower pH straighteners change hair more but weaken it.
1 citations
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July 2017 in “The Journal of Urology” Low-dose finasteride and dutasteride reduce PSA levels by 27.8% in men with male androgenetic alopecia.
206 citations
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September 2010 in “PLoS ONE” The PIRL laser cuts tissue with less damage and scarring than traditional methods.
151 citations
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November 2018 in “International Journal of Pharmaceutics” Nanoparticles improve drug delivery through the skin but more research is needed on their long-term effects and skin penetration challenges.