Davines Oil Absolute Beautifying Potion. The OI oil is a true beauty potion born from the harmony between opposing elements that complement one another. Inspired by the feminine and masculine principles, which are the foundation of universal life, are connected to the deep meaning of the twin and opposing cosmic forces of Yin and Yang, to the binary code at the root of the modern digital revolution, and finally to the Alfa and Omega of any cosmetic need for hair.