He mīhini HIFU hou, he hangarau ultrasound matatau, he kaha-teitei te arotahi, e whakarerekē ana i te hangarau kitakita tuku iho, he hangarau kitakita kore-pokanga, ka tukuna e te mīhini HIFU te kaha oro arotahi nui, ka taea te uru ki roto i te kiko kiri SMAS hohonu me te whakapūmau i te wera nui i te tūranga tika, ka whakaoho te kiri hohonu ki te kiri kia nui ake te collagen, ā, kia whakakīkī kia rite ai te kiri.
Ka whakamahia e te Pūnaha HIFU Whakawhāiti Tara he tikanga arotahi ultrasonic kore-whakaeke hei arotahi tika ki te paparanga muka o te kiriuhi mucous me te paparanga uaua. Mā te whakamahi i ngā ngaru ultrasonic hei pūtake pūngao, me te whakamahi i tōna urunga me te arotahi, ka tukuna e te pūnaha te pūngao ultrasonic e arotahi ana ki roto i te paparanga lamina me te muka uaua i roto i te hohonutanga kua whakaritea. Ka hangaia he kaha ake o te rohe ultrasonic, e kiia nei ko te rohe arotahi. I roto i te 0.1 hēkona, ka taea e te pāmahana o te rohe te eke ki runga ake i te 65 ℃, kia whakarite anōtia ai te collagen, ā, kia kore ai e pakaru te kiko noa i waho o te rohe arotahi. Nō reira, ka taea e te paparanga hohonu e hiahiatia ana te whiwhi i te hua pai o te kukū collagen, te whakarite anō me te whakaora. I te mutunga, ka tutuki te hua ngaro o te whakawhāiti tara.