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.
August 2024 in “Proceeding Cendekia International Conference Health and Technology” In this quasi-experimental study, researchers explored the optimal formulation of a nanoemulsion containing candlenut ethanol extract, finding that specific combinations of tween 80, span 80, and sonication time affected its physical properties and stability, although further activity testing is needed.
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January 2019 in “Research journal of pharmacy and technology” In this study, a hair tonic formulated from a 10% water fraction of Angiopteris evecta extract was reported to be stable and promote hair growth in rabbits, showing equal or greater efficacy compared to a synthetic minoxidil control, while being safe and non-irritating.
This study found that incorporating Aloe vera and celery extract into water or oil microemulsions promoted hair growth in rats, with the water-in-oil formulation showing faster initial results.
January 2019 in “International Journal of Herbal Medicine” This study concluded that a hair emulgel formulation combining extracts from four medicinal plants demonstrated desirable characteristics of spreadability, viscosity, pH, and safety, making it effective, harmless, and economical for potential hair care use.