January 2022 in “JURNAL BIOSAINS” This study found that a hair tonic made with 10% cassava leaf extract in combination with rose water juice improved hair length growth in rabbits compared to a commercial product.
December 2022 in “Journal of Tropical Pharmacy and Chemistry” This study evaluated a hair tonic formulated from oil palm leaf extract, finding it demonstrated very strong antioxidant activity and could prevent hair decolorization from sun exposure, with effective concentrations ranging from 25 to 200 ppm.
December 2024 in “Biomedical & Pharmacology Journal” In this study, researchers developed and assessed two polyherbal hair tonic formulations, finding that Hair Tonic A containing 10% white tea extract improved hair thickness, manageability, and anti-frizz properties, particularly for blonde and black hair, while demonstrating greater stability compared to Hair Tonic B.
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July 2022 in “International Journal of Health Sciences” In this study, researchers formulated a hair tonic using various herbal extracts and reported effective antifungal and antibacterial properties, along with good consistency, spreadability, homogeneity, appearance, and pH balance.
October 2024 in “JURNAL ILMU KEFARMASIAN INDONESIA” This study found that the F6 formulation of a hair tonic containing EDS and ATG extracts produced the most significant hair growth in rabbits, without causing skin irritation and remaining stable throughout the observation period.