Simplified definition: An Ion is an electrically charged atom or
group of atoms. A positively charged ion is called a cation and
results from the loss of electrons during chemical reactions. A
negatively charged ion is called an anion and results from the
gain of electrons.Ionic Dryer or Ion-Emitting Dryer I am told
that ionizing the air with negative ions helps to break down the
water particles in wet hair. They become smaller droplets that
can be dried faster, reducing the drying time by up to 60 per
cent. Since the hair dries faster, it is exposed to less heat
and is kept in better condition. Since the air from the blow
dryer is working more efficiently (drying hair faster,) the
dryer motor can be of lower wattage than older dryers. Older
dryers used AC motors because these motors lasted longer. The
dryers were also noisier because the fan turned faster. Since
the new dryers use ionized air, they can use DC motors that are
lighter in weight, They are quieter, the fan turns slower and
the motors last longer