Gua sha is a technique that involves scraping the skin with a massage tool to improve blood circulation, promote healing, and relieve pain. 
The benefits of gua sha include:
Reducing inflammation and puffiness
Reducing the appearance of fine lines and wrinkles
Alleviating tech neck and other pains
Improving headache and migraine symptoms
Relieving perimenopause symptoms
Helping relieve engorged breasts
Aiding in muscle recovery