6 citations
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May 2003 in “PubMed” This study found that DNA is present at low levels in human hair shafts, with higher amounts near the root, and that its levels decrease after surfactant washing and colorant treatments.
Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
99 citations
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June 2005 in “Journal of Cosmetic Dermatology” This article reviews factors influencing hair aging and available treatments like minoxidil and finasteride for androgenetic alopecia but reports no new clinical results.
21 citations
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July 2002 in “Clinical and Experimental Dermatology” This article discusses the role of cosmetic hair care products in hair loss and concludes they do not cause it, suggesting a need for clinicians to understand the hair cycle and cosmetic practices for accurate diagnosis.
October 2024 in “Journal of Cutaneous Immunology and Allergy” This case report describes a successful treatment of sarcoidal foreign body reactions caused by permanent makeup ink with local steroid injections, while also identifying the involvement of M2 macrophages in the reaction.