"In a nutshell" is an ecological packaging concept for period products that combines new materials made from nutshells with circular design. The multifunctional individual packaging shows a new cycle in design, utilizing materials and their properties and reducing waste. After all, how durable does a packaging material need to be? - Until the product is unpacked. In addition to its conventional function, the water-soluble film serves as an antibacterial soap and is free from additives and adhesives.