Gua sha is generally used with light pressure, but it is not completely risk-free for everyone. If your skin is very reactive or irritated, if you are prone to broken capillaries, or if you have recently been treated with acids or cosmetic procedures, use extra caution or consult a skincare professional before starting. Massage can put mechanical stress on fragile capillaries, and applying a tool over freshly treated or inflamed skin can worsen irritation.
For regular use, keep the pressure light, especially on areas where the skin is thin, such as around the eyes or the sides of the neck. Stop if you notice any stinging, burning, redness that does not settle quickly, or a feeling of raw skin. Do not use the tool over open wounds, sunburn, eczema patches or active breakouts, since dragging a tool over broken skin can spread irritation. If you have a chronic skin condition, are pregnant or breastfeeding, or are unsure whether massage is suitable for you, ask a doctor or dermatologist before using it.
This tool is a cosmetic accessory, not a medical device, and is not intended to diagnose, treat or prevent any disease.