Luffa is a natural, dry sponge. It is harvested from the fruit of a tropical plant (Luffa Cylindrica or Luffa Aegyptiaca) of the cucumber family. Due to its plant origins, it is biodegradable and environmentally friendly. Luffa has excellent exfoliating and smoothing properties. It eliminates dead skin cells, stimulates blood circulation and improves the condition of areas affected by cellulite.