Stearamine is an aliphatic amine intended for use in cosmetic formulations as antistatic agent. In cosmetics and personal care products, Lauramine and Stearamine have been used in hair preparations. Stearamine is also used as a corrosion-inhibiting boiler-water additive. Stearamine has antimicrobial properties. Stearylamine has been shown to prevent drug (lansoprazole) degradation and maintained drug stable in nanostructured lipid carriers (NLCs). Stearamine is used as positive charge inducing agent in different pharmaceutical formulations. Thus, the presence of stearylamine reduced the permeability coefficient for the cationic species of the drugs by approximately an order of magnitude, but had no effect on the neutral species of the drugs. The efflux curves observed for both verapamil and prochlorperazine could be mathematically modeled by assuming that the primary influence of stearylamine was on the development of a positive surface charge density on the inner monolayer of the liposome. Taken in sum, these results indicate that stearylamine is effective at decreasing the leakage of cationic drugs from liposomes, and may prove to be a valuable component of liposomal drug formulations.