How Delta-8 Oil Tincture May Benefit Your Health The Delta-8 oil tincture has been used for centuries as a medicinal oil, widely used for skin care, tooth brushing, burns and scrapes, digestive problems, fever, headache, and heartburn. Delta-8 oil can be purchased in stores as well as online. It is also available in herbal supplement form. This article discusses the uses and benefits of Delta-8 oil, as well as other full spectrum oils and supplements.