Red-light therapy works best when the device touches your skin directly, with minimal or no clothing. Medical-grade units work from farther away and need more power, while over-the-counter devices are designed for close contact. People use it mainly on the lungs, heart, and pelvic organs, especially for COVID recovery.
If you are going to have a device that has a, you know, big separation between the device and the human, you often need more power. And that tends to be used in certain instances in medicalized sort of devices. But if you're trying to use it, you know, an over-the-counter version at home for your sore shoulder, or, you know, we use it a lot with lungs and heart and pelvic organs and stuff after COVID or in long COVID. If you can lay on it, it's better. Now, if you can lay on it with either very light clothing like a t-shirt or, or no clothes, that's going to work even better because you have direct contact. But it will go through light t-shirt material.
