May 2023 in “Jurnal farmasi sains dan praktis” The hair tonic with cinnamon oil and coconut oil was stable and caused very mild irritation.
4 citations
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October 2017 in “International Journal of Applied Pharmaceutics” Licorice extract hair tonics are effective and safe for hair growth, except for mild eye irritation at the lowest concentration.
3 citations
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January 2014 Green tea extract hair tonic is stable at room temperature, promotes hair growth better than minoxidil, and is safe for use.
2 citations
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August 2024 in “International Journal of Applied Pharmaceutics” Broccoli extract hair tonic effectively promotes hair growth and is safe to use.
5 citations
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January 2019 in “Research journal of pharmacy and technology” The 10% Angiopteris evecta hair tonic is stable, promotes hair growth, and is safe.