Treatment Course (Face & Eye Area) One full course: 9 sessions For deep wrinkles: 15 sessions per course Time of use:Use every 7–10 days For sensitive skin: use every 15–20 days Notes: 1. The maximum duration of full-face treatment should not exceed 60 minutes. Those with sensitive skin should keep the energy intensity to a minimum when using radiofrequency (RF) and high-intensity focused ultrasound (HIFU). 2. After using an ultrasound scalpel, it is generally recommended to apply a moisturizing mask or use it in conjunction with a cold spray.