Frequently Asked Questions Is the ION function on my Philips hairdryer dangerous? The ION function on your Philips hairdryer is not dangerous. Read more to understand how this function works and the way it benefits your hair. Eliminates static, and conditions and smooths the hair cuticle An electronic ionizer generates negative ions, which neutralize positive ions in the atmosphere. The neutralization process seals the hair cuticle, reduces frizz and static and leaves the hair shiny.