SerMig1111
Forum Replies Created
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It is true that the -OH functional group allows the antioxidant activity of tocopherol; however, tocopheryl acetate is actually intended to work as a prodrug, with tocopherol being slowly released as the ester group es hydrolyzed. The process is slow, but there is actually evidence that it occurs. I am currently checking more information on the topic, particularly in the book Cosmetic Creams - Development, manufacture, and marketing of effective skincare products, which I think is a reliable source. I wouldn’t directly eliminate tocopheryl acetate as a useful antioxidant, not only to the formulation but also to the skin. I’ll let you know if I find some interesting information.
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Tocopherols protect natural oils with double bonds against rancidity since it works as an antioxidant (double bonds are prone to oxidation).
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Ok, thanks for the recommendation
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Hi @PerryI think this is a basic question too:What is the adequate method to measure the pH of a cosmetic cream?By reading in this same forum, it seems that the method depends on the type and viscosity of the product. I have found conflicting information on the Internet too, some measure the pH directly in the cream, while others dilute in water (1:10).
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So it seems that the more adequate procedure is to dilute the product. It is interesting to see the wide acceptance of this method, a ten-fold dilution makes a significant difference to me, but it’s just my opinion. Since pH measurement depends on the characteristics of the cream, Can you suggest me a reliable book to go deeper into this topic? I produce both, o/w and w/o skin creams with different viscosities.Thank you for commenting
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Hi, I also use tocopheryl acetate in my cosmetic formulations. Actually, it seems to be the most common way to add Vitamin E to a cosmetic. As described in the technical sheet of the known manufacturer BASF: “Vitamin E acetate is stable towards heat and oxygen, in contrast to Vitamine E alcohol (tocopherol)”. I think that’s the main reason.