This is a pure essential oil, Manufactures by by steam distillation. Rosehip oil contains vitamin C and vitamin A. It also contains essential fatty acids such as: oleic acid palmitic acid linoleic acid gamma linolenic acid Rosehip oil is also a good source of vitamin F, a fatty acid made of linoleic acid and alpha-linoleic acid. Rosehip oil is an alternative and complementary medicine, so there aren’t many studies proving its effectiveness. Anecdotal evidence supports its value as a safe skin care product.