In this animal study, treatment with Trachyspermum copticum seed extract significantly altered IL-1 and KGF/FGF-7 gene expression, improving dermatitis and hair growth in mice compared to controls and corticosteroids.
October 2001 in “WORLD SCIENTIFIC eBooks” This compilation on contact and occupational dermatology in the Asia-Pacific region discusses various allergens and irritants without reporting new clinical findings.
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March 1989 in “British journal of dermatology/British journal of dermatology, Supplement” In this study, the authors compared topical diphencyprone and tretinoin gel for treating alopecia totalis and universalis, but the abstract does not report any definitive clinical results.
May 2023 in “Jurnal farmasi sains dan praktis” In this research on cinnamon and virgin coconut oil hair tonics, F2 and F3 demonstrated stable physical properties and mild irritation potential, while formula 1 remained non-irritating but less stable regarding pH and viscosity.
September 2024 in “Journal of the American Academy of Dermatology” Generic topical and transdermal systems usually cause minimal irritation or sensitization.