Many commercially available sponges are made from petroleum-derived plastics such as polyurethane, which wear down over time and break down into tiny fragments (microplastics) that can end up in rivers and oceans with wastewater. These do not decompose naturally and have a long-term negative impact on the marine environment and ecosystems.
On the other hand, loofahs are made from 100% natural plant-based materials, and after use, they can be buried in the soil and will naturally decompose, leaving no burden on the environment. Furthermore, they emit very little toxic substances or CO₂ throughout the entire process, from production to disposal.
Furthermore, because it is a natural material, it does not produce toxic gases when incinerated, making it safe to dispose of. Loofah is a renewable resource that has long been used in Japan for food and household items, making it an excellent material for supporting sustainable living.