The therapeutic botanical properties of evening primrose oil (Oenothera biennis) are described as astringent and helpful for skin irritations. Incorporated into certain preparations at a 10 percent concentration, it appears to improve cases of pruritis and xerosis. evening primrose oil improves the skin’s hydration and its ability to develop normal barrier functions. evening primrose oil contains a high amount of gamma linoleic acid, which is one of the essential fatty acids vital for maintaining the normal functioning of the epithelial barrier membrane.
Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Oenothera biennis, Onagraceae.
