Development and evaluation of roselle soap using palm and coconut oils

This study focuses on the formulation of natural soap enriched with roselle (Hibiscus sabdariffa) extract using two different base oils: palm oil and virgin coconut oil. Roselle is known for its antioxidant and antibacterial properties, making it a promising natural ingredient for skincare. The objective was to compare the physical and functional qualities of palm oil-based and coconut oil-based soaps, with emphasis on texture, lather, color, and cleansing performance. Soap samples were prepared using the cold process method and tested for cleansing efficiency using marker stain removal time. Findings indicate that coconut oil-based soap produced harder bars with rich, bubbly lather, while palm oil-based soap created softer bars with creamy, stable lather. The palm oil formulation showed faster cleansing (12.76 s) compared to coconut oil (15.63 s), though the latter maintained roselle’s reddish-brown color more effectively. This study highlights roselle’s potential as a functional and sustainable additive in natural soap production, aligning with growing consumer demand for eco-friendly personal care products.