How Far Should You Sit From a Red Light Therapy Panel?

Distance from a red light therapy panel is one of the most practical variables to optimise — and one of the most commonly misunderstood. The distance determines the irradiance (light energy per unit area) that reaches your tissues, which is the primary driver of therapeutic effect. Here is exactly what the research says about optimal distances.

The Inverse Square Law and Light

Light irradiance follows the inverse square law: as you double the distance from a light source, the light energy per unit area falls to one quarter. This means distance matters significantly — a panel at 15cm delivers much more light energy to tissues than the same panel at 60cm. Understanding this is essential for getting therapeutic doses from your panel.

Optimal Distances by Application

Skin and facial treatment: 15-25cm. At this distance, the 660nm wavelength delivers maximum benefit to skin cells with minimal loss. General recovery and muscle treatment: 20-40cm. This distance provides a good balance between therapeutic irradiance for deeper tissues and comfortable session duration. Whole-body or low-intensity sessions: 40-60cm. Useful for general wellness use when you want to be further from the panel.

Practical Guidelines for HiStrips Panels

HiStrips Red Light Panels deliver therapeutic irradiance across the 15-50cm range. Closer is not always better — at very close range (under 15cm), the light can feel uncomfortably warm and the coverage area becomes smaller. The practical sweet spot for most users is 20-30cm — close enough for strong therapeutic effect, far enough for comfortable sessions and good coverage.

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