Preservatives: Inactivation by cellulose derivatives

There’s one more thing to consider when using our preservatives – inactivation by cellulose derivatives! In this study, various cellulose derivatives were tested with various preservatives to see which ones retained their efficacy. Here’s the list…Methylcellulose reduced paraben efficacy.Methylcellulose, sodium carboxymethylcellulose, and hydroxypropylmethylcellulose all reduced phenoxyethanol efficacy.Gelatin reduced paraben efficacy.Polyvinylpyrrolidone (PVP) reduced paraben efficacy.A few…