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.
61 citations,
October 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” The document concludes that accurate diagnosis is crucial for effectively treating common scalp disorders, which often have similar symptoms.
15 citations,
March 2015 in “Australasian Journal of Dermatology” Seborrhoeic dermatitis may cause a condition called "seborrhoeic folliculitis," leading to chronic scalp inflammation and scarring hair loss.