Lymph is part of the immune system. It contains white blood cells that help protect against foreign invaders. In one of Dr. Vodder’s course manuals, he says that a third of all lymph in the body is concentrated in the face, head, and neck. Different sources cite different numbers, but we have about 800 lymph nodes in the body, and of those 300 are in the neck alone!
The lymph plays an important role in keeping the skin healthy and clear. Here's how facial gua sha can help.