2. Ukunakekelwa kwesikhumba, i-collagen ilungele isikhumba ukukwazi ukunakekelwa kwesikhumba ngokuphumelelayo, ubuhle, ngoba i-collagen inomsebenzi wesikhumba esinomsoco, ingagcina ngokuphumelelayo ukunwebeka kwesikhumba, igcine umswakama wayo futhi ilula, ilungise isikhumba esonakele. , qinisa ngempumelelo isikhumba, ushwabene, ugcine umswakama;