Extending The Shelf Life of Oils

by Christine

I have read that when oils are purchased, their shelf life can be extended by adding Vit E, which will help slow down the oxidation process. What is the rule of thumb percentage for this?


There isn't really a specific rule to my knowledge, especially since there are so many strengths of Vitamin E oil.

I did a quick search and found the following information on "From Nature with Love".
"While the alpha tocopherol in the 250, 1000, and 1400IU/g oils is wonderful as an in vitro antioxidant, studies show that the gamma tocopherol in the Vitamin E T-50 oil is a better antioxidant for oils/lipids in cosmetic formulations. T-50 has a higher content of gamma tocopherols and can be used at a rate of .04% or 400ppm to adequately protect your oils."
Hope that helps,

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