The question worth asking here is a specific one: does the Aerisynic produce negative ions at a concentration high enough to actually matter?

Research establishes that meaningful physiological effect requires sustained exposure at relevant concentrations. The body needs a minimum of 600 negative ions per cm³ for normal function. Clinical devices used in the dermatological studies referenced above operate at concentrations of 5 million or more per cm³ — but those are professional facial treatment environments.

The Aerisynic is designed for personal, ambient use — meaning it creates a zone of elevated negative ion concentration in the immediate space around you. It works best when used in the environments where you're most exposed to the problem: at your desk, near your screens, in your bedroom while you sleep.

This is precisely where the benefit compounds. Professional treatments give you concentrated exposure for 20 minutes. Ambient use gives you sustained exposure during the 8 hours you sit at a desk or the 7 hours you sleep — which is when the low-grade, cumulative damage most consistently occurs.