An air ioniser (or negative ion generator or Chizhevsky's chandelier) is a device that uses high voltage to ionise (electrically charge) air molecules.
Vitamin E for hair growth is beneficial because vitamin E has the effect of a scalp massage all the time. It contains valuable antioxidants that help to keep the immune system up and improves circulation to all parts of the body, including the scalp.
Vitamins C, E and A are important for the health of the skin and hair. They increase the health and efficiency of the entire body, thereby freeing up the resources to feed your hair the nutrients it needs on a daily basis. They help promote healthy connective tissues and cellular growth.