Is Red Light and Infrared Light the Same?: 1 Minute to Understand the Differences and Similarities

Red light and infrared light are not the same, though they are closely related on the electromagnetic spectrum. Red light refers to visible light with wavelengths roughly between 620 and 750 nanometers (nm). It is the longest wavelength of visible light that the human eye can see, often used in red light therapy for skin rejuvenation and healing. Infrared light, on the other hand, is invisible to the human eye and sits just beyond red light, with wavelengths approximately from 750 nm to 1 millimeter. Infrared light penetrates deeper into tissues and is typically used for pain relief and muscle recovery treatments.

Tips 1:

From a design perspective, understanding the differences in light wavelengths is crucial when selecting lighting for interiors. The right choice affects ambiance, visibility, and even wellness. If you're planning a wellness space or therapy room, tools like a room planner can help map out where to position red or infrared lighting fixtures for both function and comfort.

FAQ

Q: Are both red and infrared lights used in therapeutic devices?

A: Yes, but they have different roles. Red light targets superficial skin tissue, while infrared light penetrates deeper for muscles and joints.

Q: Can humans see infrared light?

A: No, infrared light is not visible to the human eye, unlike red light which is at the visible spectrum's edge.

Q: Do red and infrared lights feel different on the skin?

A: Infrared is often felt as heat, while red light feels neutral or slightly warm.

Q: Should I use red or infrared light for pain relief?

A: Infrared light is more effective for deep tissue and pain relief.

Q: What safety considerations should I keep in mind with these lights?

A: Always follow manufacturer guidelines—excessive exposure to any therapeutic light can cause irritation or burns.