I have been reading discussions on preservatives for days, but I am still failing to figure out a solution. I have a client who is insisting on a product with sodium ascorbyl phosphate, expecting 18+ months shelf life (I am in the process of explaining how ambitious that is), and, of course, wants it to be naturally preserved (preferably with Preservative Eco/Microkill). I feel stuck as I am afraid to go below pH 6 with SAP and above pH 5.5 with natural/ecocert/cosmos compliant preservatives. My only hope for now is Spectrastat G2 (Caprylhydroxamic acid, glyceryl caprylate, glycerin) which I've never worked with and I am not sure how efficient it would be as a stand alone preservative. I am a germofob and always vote parabens and am seriously starting to hate green formulating. I have to mention that the product will be loaded with hydrosols (preserved with polylysine) and aloe. I would really appreciate any thoughts anyone might have.