Uma kuziwa ekunakekeleni isikhumba, ukuthola imikhiqizo efanele kungaba umsebenzi onzima. Njengoba kunezinketho eziningi laphaya, kubalulekile ukuqonda izinzuzo nokusetshenziswa kwemikhiqizo ethile ukuze wenze isinqumo esinolwazi. Omunye umkhiqizo onjalo odumile emhlabeni wokunakekelwa kwesikhumba ukhilimu we-retinol. Kule bhulogi, sizongena ezinzuzweni, ukusetshenziswa, kanye nezincomo zokhilimu be-retinol ukukusiza uzuze isikhumba esinempilo, esikhazimulayo.