CW Apothecary's Blue Vervain Infused Oils are made from heating (infusing) dried Blue Vervain Herb at a very low heat for 3 days. We use Hemp Oil with a little coconut oil and vitamin E as our carrier oil of choice. It's a great way to use Blue Vervain topically for amazing skin care benefits. Blue Vervain Infused Oil is naturally absorbed through the skin and can act as a medium to carry herbal constituents deeper into the body. We have had great luck with our Blue Vervain infused oils and now available to you.