Natural fibers in gourds from the Luffa cylindrica plant, cotton string holder.
Soak new loofah in hot water to soften fibers prior to first use. Fibers will continue to soften with each use there after.
General life span is 3-4 weeks kept clean and dry. Coupled with our natural soaps the life span maybe extended because our soaps are anti-microbial, and anti-bacterial fighting.