Formulation of Hair Tonic with Aloe Vera Extract and Hair Growth Activity Test on Male White Rats

In the 2018 study, Aloe vera was formulated into a hair tonic and tested for its ability to promote hair growth in male rats. The hair tonic contained varying concentrations of Aloe vera extract (5%, 7.5%, 10%, and 15%) and additional ingredients such as 96% ethanol, propylene glycol, propyl paraben, methyl paraben, sodium metabisulfite, and menthol. The tonic underwent organoleptic, pH, and viscosity tests, as well as physical stability tests at different temperatures (high, room, and low). The hair growth activity was assessed by applying the tonic to shaved rats and measuring hair length on days 3, 6, 9, 12, 15, and 18. The study concluded that the hair tonic formulations were physically stable across all temperatures tested, and the most effective concentrations for promoting hair growth in rats were the 10% and 15% Aloe vera extract formulations.