Before using the beauty device, remove all metal accessories from your body, such as glasses, earrings, necklaces, watches, and rings. If you have metal implants in your body from surgeries (e.g., heart bypass surgery, metal pins in bones), do not use the device. Avoid using the device on areas with skin inflammation, acne-prone skin, wounds, as well as sensitive areas like the eyes, lips, and vocal cords. Remove contact lenses before use; if removal is not possible, avoid the eye area and shorten the usage time. Metal braces in the mouth can be more sensitive, so avoid the mouth area. Also, do not stay on the same spot for long period.