Mō ngā ahumahi e hiahia ana ki ngā matū whakamātotoru, whakapūmau, me ngā matū whakapūmau pai rawa atu, ko te Hydroxyethylcellulose (HEC) te mea e tū ana hei otinga maha-whakamahinga me te mea nui. Mēnā kei te rapu koe i ngā wheketere HEC pai rawa atu, kaua e titiro atu ki tua. Mā tō mātou whakapau kaha ki te auahatanga me te kounga ka wehea mātou i roto i te ao hanga.