Formulation and Evaluvation of Plectranthusamboinicus Ethanolic Extract Based Herbal Lip Balm

Abstract

The current research focused on designing and assessing a herbal lip balm with the ethanolic extract of Plectranthusamboinicus, a medicinal herb that has anti-inflammatory, antimicrobial, and antioxidant activities. The product was prepared based on natural products including beeswax, coconut oil, almond oil, aloe vera gel, vitamin E, and vanilla essence. Maceration using 95% ethanol was applied to the plant material to achieve the active extract. Three formulations (F1, F2, and F3) were developed in which the ratio of base ingredients was changed while the concentration of the active extract was kept constant. The formulations were tested for the important physicochemical parameters such as organoleptic properties, pH, melting point, water content, spreadability, and skin irritation. The findings revealed that the formulations all had a smooth texture, good fragrance, and maximum spreadability. pH values of 6.5 to 7.0 corresponded to the physiological pH of lips, thus ensuring minimal irritation. Formulation melting points of 66–68°C assured thermal stability during routine storage conditions. No irritation was seen during lip irritation tests. F1 among the three had the best compromise between texture, stability, and acceptability to the user. The research concludes that the Plectranthusamboinicus herbal lip balm is a stable, non-irritating, and effective formula, providing a promising alternative to artificial lip care products.