Please rest assured that it can be used. 

There are two probes, one for the eyes and one for the face. You don’t need to replace the probes and you can use them all the time unless they are broken or not cleaned properly after use and the gel inside is blocked, then you need to replace them. 

Only RF can produce a sense of heat, while HIFU cannot. Please contact us via email to help you troubleshoot the problem. 

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. 

Does the area require anesthesia? Gel can be used. Is there a training program? We have an instructional video available; you can contact us via email to get one. How often do I need to replace the tip of the machine? This machine does not require replacement. What is the warranty? It comes with a CE certificate and a one-year warranty. Is it suitable for spa use? Both the HiFu 3.0 and HiFu 4.0 are suitable for spa use.  

You mentioned the temples and the corners of the mouth, which can be used. The longest use time for the whole face is no more than 60 minutes. For people with thin stratum corneum and skin allergies, the probe should stay on each position of the face for no more than 3 seconds; for oily or neutral skin, the use time for each position can reach 5-8 seconds. This instrument must be coated with a medium when used. It is recommended to use your frequently used skin care products, such as lotion, aloe vera gel, etc. as a medium. (Alcohol-containing essential oils and fragrances should not be used) 

Only RF can produce a heat sensation, while hifu does not. It has two gears, one is the RF gear, which represents the energy intensity. The stronger the RF gear, the more obvious the heat sensation will be; the other is the HIFU gear, which represents the depth of action (1.5mm, 3.0mm and 4.5mm) 

The HIFU button is the gear adjustment for depth adjustment. 

1.5mm is recommended for the forehead (HIFU level 1), 3.0mm (HIFU level 2) for the eye area, and 4.5mm (HIFU level 3) for the cheeks. If the skin is thin, you can try 3.0mm first, and then use 4.5mm after you get used to it. It depends on the individual. If you think it is necessary to use 1.5mm for the eyes 

It is recommended to use 1.5mm (HIFU level 1) for the forehead, 3.0mm (HIFU level 2) for the area around the eyes, and 4.5mm (HIFU level 3) for the cheeks. If your skin is thin, you can try using 3.0mm first, and then use 4.5mm after you get used to it.