green and blue light exposure measurably lowers perceived pain during needle procedures
Green and blue visual color stimuli significantly reduced subjective pain VAS scores during peripheral intravenous cannulation compared to red and translucent conditions in dental phobia patients.
What this means for you
Color and light aren't just aesthetic — they actively influence how your nervous system registers discomfort. In a controlled study, people exposed to green or blue light reported significantly less pain than those under red or standard lighting. For anyone sensitive to procedures or prone to anxiety, the right light environment may take the edge off.
The published research
Effects of Different Visual Color Stimuli on Stress Responses in Patients with Dental Phobia
Journal of Clinical Medicine · 2025
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.