Bio3 Revitalizing Evening Primrose 60 Capsules. Revitalizing Evening Primrose Bio3 is especially recommended to combat pre-menstrual discomfort and arthritis pain. Help with proper formation of collagen, so that the use of evening primrose oil prevents skin aging and facilitates the growth of nails and hair. Also works by helping to balance blood pressure and controls the processes of constriction and dilation of blood vessels. Pearls of evening primrose oil extracted by cold expression from the seeds of Oenothera biennis plants. High in Omega 3 essential oil.