Does Red Light Therapy work through clothing?

To be honest, Red Light and Near-Infrared Light generally cannot effectively penetrate most clothing or other thick materials. For Red Light Therapy to deliver optimal performance, the light should reach the skin directly without significant obstruction.

When fabrics or coverings are placed between the device and the treatment area, the light intensity reaching the skin is usually reduced. This may weaken the effectiveness of the therapy and limit the amount of light energy absorbed by the targeted tissues. Even thinner materials can partially block therapeutic wavelengths and reduce treatment efficiency.

For this reason, direct skin exposure is strongly recommended during each session. Positioning the device toward uncovered skin allows the Red Light or Near-Infrared Light to penetrate more effectively and helps support more consistent treatment results across the intended area.

In situations involving wounds or sensitive skin areas, a transparent and non-blocking dressing may be used if protective coverage is necessary. Transparent materials are generally more suitable because they allow better light transmission compared to standard opaque bandages or thick coverings.

Proper device positioning and unobstructed light exposure are important factors in achieving stable and effective Red Light Therapy performance. Following the recommended usage guidelines for each device can help ensure more reliable treatment results over time.