Ngwaahịa a bụ ahịhịa maka ihicha isi nke ụmụ amụrụ ọhụrụ, nke nwere ike wepu unyi nke ọma.Ihe eji eme ihe bụ silica gel, nke dị nro ma ghara imerụ akpụkpọ ahụ nwa.Ngwaahịa a nwere mmetụta ịhịa aka n'ahụ ma nwee ike hichaa mgbanaka nwa ebu n'afọ n'isi nwa;Mgbe ejiri ya, enwere ike itinye ya ozugbo na enyo.
