Effect of Sodium Lauryl Sulfate Concentration Variation as Surfactant in Ethanol Extract Shampoo of Randu Leaves (Ceiba Pentandra Gaertn) on the Resulting Physical Properties

The study investigated the effect of varying concentrations of sodium lauryl sulfate (SLS) on the physical properties of a herbal shampoo made from randu leaf (Ceiba pentandra Gaertn) extract, known for its hair growth-promoting compounds. Four shampoo formulations with SLS concentrations of 0%, 5%, 10%, and 15% were tested for organoleptic properties, pH, viscosity, foam stability, specific gravity, and surface tension. The formulation with 10% SLS (FII) exhibited the best physical properties, aligning closely with the Indonesian National Standard, with a viscosity of 450 cP, pH of 8.05, foam stability of 86.048%, specific gravity of 1.121 g/cm³, and surface tension of 68.133 dyne/cm. Statistical analysis confirmed significant differences in the physical properties of the shampoos based on SLS concentration.