GSE = grapefruit seed extract
ROE = rosemary oleoresin extract
"...There are so many mixed opinions about preservatives...."
If the sources you are using are saying GSE and ROE are preservatives, then the sources are being written by people who have minimal knowledge of cosmetic science. There are a fair number of ignorant, false, and downright dangerous "facts" being passed around the internet blog-o-sphere like the cold virus in a 4th grade classroom. This particular bit of misinformation that an antioxidant = preservative is widespread amongst those folks. The best place to get set straight is Susan Barclay Nichols website (http://swiftcraftymonkey.blogspot.ca).
"[Vitamin E and grapefruit seed extract] ...are anti-oxidants, meaning they will retard the rancidity of our oils, but they don't protect our products from bacteria, fungus, yeast, or molds, which is what preservatives do...." Source: http://swiftcraftymonkey.blogspot.com/2014/01/weekend-wonderings-whats-plasticizer.html
"...Study after study has shown that the preserving power of GSE comes from the preservatives added to the product. Various studies have shown GSE contains benzethonium chloride, benzalkonium chloride, triclosan, and various parabens, and these are what offer the bacteria, fungus, yeast, and mould fighting powers attributed to GSE...." Source: http://swiftcraftymonkey.blogspot.com/2010/10/preservatives-grapefruit-seed-extract.html
"...For non-water containing or anhydrous products, we can add anti-oxidants, or ingredients that will retard the rancidity of our oils. The anti-oxidant we use most is Vitamin E, but there are other oil soluble anti-oxidants, like rosemary oleo extract (ROE). Adding an anti-oxidant to an anhydrous product will extend its shelf life...." Source: http://swiftcraftymonkey.blogspot.com/2014/01/weekend-wonderings-do-we-need-to.html
ROE = rosemary oleoresin extract
"...There are so many mixed opinions about preservatives...."
If the sources you are using are saying GSE and ROE are preservatives, then the sources are being written by people who have minimal knowledge of cosmetic science. There are a fair number of ignorant, false, and downright dangerous "facts" being passed around the internet blog-o-sphere like the cold virus in a 4th grade classroom. This particular bit of misinformation that an antioxidant = preservative is widespread amongst those folks. The best place to get set straight is Susan Barclay Nichols website (http://swiftcraftymonkey.blogspot.ca).
"[Vitamin E and grapefruit seed extract] ...are anti-oxidants, meaning they will retard the rancidity of our oils, but they don't protect our products from bacteria, fungus, yeast, or molds, which is what preservatives do...." Source: http://swiftcraftymonkey.blogspot.com/2014/01/weekend-wonderings-whats-plasticizer.html
"...Study after study has shown that the preserving power of GSE comes from the preservatives added to the product. Various studies have shown GSE contains benzethonium chloride, benzalkonium chloride, triclosan, and various parabens, and these are what offer the bacteria, fungus, yeast, and mould fighting powers attributed to GSE...." Source: http://swiftcraftymonkey.blogspot.com/2010/10/preservatives-grapefruit-seed-extract.html
"...For non-water containing or anhydrous products, we can add anti-oxidants, or ingredients that will retard the rancidity of our oils. The anti-oxidant we use most is Vitamin E, but there are other oil soluble anti-oxidants, like rosemary oleo extract (ROE). Adding an anti-oxidant to an anhydrous product will extend its shelf life...." Source: http://swiftcraftymonkey.blogspot.com/2014/01/weekend-wonderings-do-we-need-to.html