4 citations
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October 2017 in “International Journal of Applied Pharmaceutics” This study found that hair tonics with 5% and 10% licorice extract promoted hair growth in rabbits similarly to 2% minoxidil and were generally safe, although they caused mild eye irritation at the 2.5% concentration.
3 citations
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January 2014 This study concluded that a green tea extract hair tonic was stable, promoted more hair growth than 2.5% minoxidil, and did not cause skin irritation.
May 2023 in “Jurnal farmasi sains dan praktis” In this research on cinnamon and virgin coconut oil hair tonics, F2 and F3 demonstrated stable physical properties and mild irritation potential, while formula 1 remained non-irritating but less stable regarding pH and viscosity.
January 2022 in “Pharmaceutical Sciences Asia” This study found that a liposome containing butterfly pea flower extract and clove oil was stable and, when used by 15 volunteers over 60 days, enhanced eyebrow thickness and darkness without causing irritation.
September 2020 in “Pharmauho/Pharmauho : Jurnal Farmasi, Sains dan Kesehatan” This study concluded that hair tonic formulated with galangal rhizome and Aloe vera extract was stable according to the Indonesian National Standard, showing consistent organoleptic, pH, and viscosity characteristics after stability testing.
