When using a Gua Sha, it's generally recommended to stroke each section of your face 3-5 times before moving on to the next area. However, you can adjust the number of strokes to suit your personal preference and the needs of your skin. It's important to avoid overstimulating the skin by using the Gua Sha too frequently or applying too much pressure. Instead, use light pressure and take your time to work slowly and gently across each section of your face. You can also experiment with different techniques, such as using shorter or longer strokes, or using circular or back-and-forth movements. The key is to listen to your body and adjust your technique as needed to ensure a comfortable and effective massage.