January 2025 in “Termometer Jurnal Ilmiah Ilmu Kesehatan dan Kedokteran” Tea leaf extract tonic promotes hair growth better than controls but has stability issues.
May 2024 in “Jurnal Penelitian Farmasi dan Herbal” Green tea leaf extract at 7.5% concentration effectively promotes hair growth, similar to minoxidil.
December 2021 in “Ad-Dawaa' Journal of Pharmaceutical Sciences” Green tea and celery leaf extracts in hair tonic promoted hair growth in guinea pigs, with the best results at specific concentrations.
May 2024 in “Molecules/Molecules online/Molecules annual” Plant extracts can help prevent hair loss and promote hair growth.
October 2023 in “Jurnal Ilmu Kefarmasian Indonesia” Cinnamon essential oil and virgin coconut oil hair tonic promoted hair growth, with the highest concentration performing better than the positive control.