formulating for a “natural” clients line. not where i have a lot of experience. i am having trouble choosing a preservative system as im unfamiliar with most of the natural ones. product is 20% water and will be used by wet hands in a humid environment. im recomending phenoxyethenol but thier preference is Spectrastat G2-N or Euxyl K712. ill test them both but please someone give me a level of confidence this isnt going to be a pot of mold!! whos used these?