66 citations,
January 1987 in “Journal of Investigative Dermatology” Coal tar shampoo increases enzyme activity in hair follicles, enhancing carcinogen binding to DNA.
16 citations,
January 2000 in “Journal of dermatological treatment” Calcipotriol scalp solution works better than coal tar shampoo for treating scalp psoriasis and is safe for long-term use.
128 citations,
January 2001 in “American Journal of Clinical Dermatology” Coal tar shampoos, salicylic acid, and topical corticosteroids are effective for scalp psoriasis, with Vitamin D3 analogues also showing benefits; severe cases may require stronger medication with more risks.
9 citations,
January 1983 in “Journal of Chromatography B Biomedical Sciences and Applications” Human hair follicles can assess carcinogen metabolism and imidazole compounds might be effective anticarcinogens.
1 citations,
January 2019 in “PubMed” A woman developed a hair disorder after a bone marrow transplant, which improved with treatment.