This study investigated whether combinations of green tea leaf and gotukola extracts could act as a hair growth stimulant but reports no definitive results on the most effective combination.
2 citations
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April 2016 in “Pharmaciana” This study found that a combination of 5% green tea leaf extract and 2.5% gotukola extract stimulated hair growth effectively, achieving a growth rate of 2.689 cm in 28 days.
December 2025 in “International Journal of Molecular Sciences” In this study, orally administered Centella asiatica extract, standardized for asiaticoside content, significantly improved skin barrier function, elasticity, and reduced signs of UVB-induced photoaging in hairless mice, highlighting its potential as a nutricosmetic for skin health.
December 2021 in “Jurnal ilmiah Manuntung” This study tested a hair tonic containing gotu kola and garlic extracts on rabbits, finding that the formulation with 5% gotu kola and 0.04% garlic showed promising hair growth results and remained stable during storage.
5 citations
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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.