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.
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.
2 citations
,
April 2016 in “Pharmaciana” Green tea and gotukola extract mix helps hair grow, with the best results from 5% green tea and 2.5% gotukola.
7 citations
,
August 2020 in “Majalah Farmasetika” A herbal hair tonic with 2.5% green tea extract is most effective for hair growth.