Ku bijyanye no kwita ku ruhu, kubona ibimera neza ni ngombwa mu kubungabunga uruhu rwiza, rukayangana. Hamwe namahitamo menshi arahari, birashobora kuba byinshi guhitamo ibicuruzwa byiza kubyo ukeneye byihariye. Nyamara, kimwe mu bintu byagiye byitabwaho mu isi yita ku ruhu ni ceramide. Izi nteruro zikomeye zikora imiraba mubikorwa byubwiza, kandi kubwimpamvu.