Packaging Design Dual Zero waste by Jiani Zeng Dual is a new idea of liquid hand wash using solid soap as packaging. The solid soap is made in a high density to make sure it does not crash when pressing the pump. It is designed to decrease the plastic pollution generated by the waste bottles. After using up the liquid soap, user can remove paper wrapping and use the solid soap packings as hand wash. In the end, dispenser pump is the only component left and can be used in other Dual soap replacement.