Shell powder e bolela phofo e entsoeng ka ho sila le ho sila likhetla.95% ea metsoako ea eona ke calcium carbonate, chitin, le palo e nyane ea amino acid le polysaccharides.E ka sebelisoa e le lisebelisoa tsa maemo a holimo bakeng sa lijo, litlolo le mekhabiso ea ka hare, 'me e sebelisoa liphoofolong le likhoho.Lijo le li-additives tsa lijo tsa khalsiamo, ts'ebetso ea mabenyane, li-desiccants, joalo-joalo.