It is more stable than Vitamin E as an antioxidant although it is more used for the shelf life of the product.
Vitamin E is more beneficial for the skin.
When using with blends of oils, consider which are the most vulnerable to oxidation and what is their ratio in the blend.
Oil soluble so cannot be used in water only products.
When making oil only blends, Rosemary antioxidant can make the finished blend darker.
We have found that using a low percentage of EcoSilk in the blend helps to keep the blend a little lighter in colour.
It does depend of the blend so experiment with small amounts first.