Evening Primrose is a plant native to North America known for its yellow and fragrant flowers. It is a flagship plant for women's well-being and has been used for centuries to relieve discomfort related to hormonal imbalance.

Evening primrose, or Yue jian cao in Chinese, is recommended as a cycle regulator for women who are subject to difficult periods and those who suffer from menopausal discomfort because this plant alleviates hot flashes, irritability and womb pain. Thus, Yue jian cao is the plant par excellence to allow women to find well-being and serenity.