CO₂ applied to skin dilates blood vessels by lowering local pH and arterial resistance
CO₂ application to the skin causes hypercapnia that lowers the resistance of arteries in the skin and muscles, with skin arteries dilating due to the concurrent decline in pH.
What this means for you
When blood vessels widen and resistance drops, circulation improves — more oxygen and nutrients reach your skin and muscles. Most people notice this as warmth, a healthy flush, and a sense of physical ease. Over time, better peripheral circulation supports recovery, skin vitality, and cardiovascular comfort.
The published research
CO2 Balneotherapy for Arterial Occlusion Diseases*:
· 1985
This page describes a documented finding about the underlying wellness technology. It is not a marketing claim about any specific device. For information about HOCATT specifically, visit hocatt.com.