Izinto zemveli zokulahla inkunkuma, ezifana nomthi kunye ne-foam, zihlala zilahlwa emva kokusetyenziswa kube kanye, nto leyo ekhokelela kwiinkxalabo zokusingqongileyo kunye nokuveliswa kwenkunkuma. Kwelinye icala, iinkqubo zokulahla inkunkuma ezingasetyenziswa kwakhona zingasetyenziswa amaxesha amaninzi, ukunciphisa inkunkuma kunye nokukhuthaza uzinzo.
