Gua sha is a technique used in traditional East Asian medicine. It is often used to treat muscle pain and tension. This treatment specifically for the neck, shoulders, and full back. The more toxic you are the more redness come out. It’s an instant pain reliever. I combine my special tool with herbal oil. It looks painful but it’s the opposite. The marks will be gone in 3-4 days. It’s 20 minutes treatment. Recommend with the Gua sha facial.