December 2025 in “PubMed” The minoxidil and finasteride foam remains stable and effective for 180 days at room temperature.
September 2020 in “Pharmauho/Pharmauho : Jurnal Farmasi, Sains dan Kesehatan” The hair tonics with galangal and Aloe vera extracts were stable and met standards.
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January 1994 in “Yakugaku zasshi” EPC-K is stable except at very acidic pH or when exposed to sunlight, and it can decompose in low ethanol concentrations.
December 2022 in “Journal of Tropical Pharmacy and Chemistry” The hair tonic made from oil palm leaf extract is very effective in preventing hair damage from the sun.
September 2022 in “KnE medicine” Higher candle nut oil concentration increases droplet size and changes the hair tonic's properties and stability.