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Putri, M. R.; Simanjuntak , N. J. P.; Sembiring, N. B. Antioxidant Activity Test of Patchouli Leaf Ethanol Extract Lotion (Pogostemon Cablin Benth) Using The DPPH (2,2-Diphenyl-1-Picrylhydrazil) Method. JPS 2026, 9, 1725-1734.