Narmuratova М. ., Nurseitova М. ., Kanayat Ш., Syzdyk М. ., Syman Қ. ., and Akhmetsadykov Н. . “Biological Properties of Cosmetic Soap Based on Horse Fat”. BULLETIN of the L.N. Gumilyov Eurasian National University. BIOSCIENCE Series, vol. 156, no. 3, Sept. 2026, pp. 22-36, doi:10.32523/2616-7034-2026-156-3-22-36.