Gua sha is a traditional Chinese medicine technique that involves scraping the skin with a smooth-edged tool, typically made of jade or other materials, to promote circulation and lymphatic drainage.

During a gua sha treatment, the tool is gently pressed and stroked over oiled skin in specific patterns, creating light bruising or "sha" marks. This technique helps to release tension, reduce inflammation, and promote blood flow to the muscles and tissues underneath the skin.

Gua sha is believed to stimulate the immune system, detoxify the body, and improve the overall health and appearance of the skin. It is used for treating muscle pain, headaches, and even chronic conditions, while also providing a relaxing and rejuvenating effect.