We apologize for the conflicting information. For this FacialDefy 3.0 model, HIFU, RF, and red LED can be used together during the same treatment. They can also be switched on separately according to your skin’s comfort and treatment needs. The correct answer is that all three features may be used together, but it is not required. Please start at the lowest intensity and use sufficient conductive gel.  

A “shot” means one activation of the HIFU probe, not one treatment session. When you press and hold the treatment button, the probe continues operating and this counts as one shot. If you release the button and press it again, another shot is counted. Therefore, 20,000 shots does not mean exactly 20,000 sessions. One session may use one or several shots, depending on how many times you stop and restart the probe. Each probe has a total capacity of approximately 20,000 shots and should be replaced once the counter is used up.  

The cartridges do not need to be replaced after a certain number of treatments. Each cartridge is rated for approximately 20,000 shots. Once the cartridge reaches its shot limit, it should be replaced. How long a cartridge lasts depends on your usage frequency. For most home users, a cartridge typically lasts many months before replacement is needed. 

No, you need to hold down the button while using it. 

HIFU 3.0: Each probe can be used 20,000 times. If you need one, you can purchase a replacement probe under the HIFU category. 

Hello, yes, it is compatible. 

You understand correctly. It can be used a total of 20,000 times. After that, the probe needs to be replaced. It can be found under the Beauty Instrument category in the HIFU Instrument section. 

An eye probe is used near the eyes and can be placed on the eyelids or under the eyes. 

You can check the HIFU Instrument category under Beauty Instrument, where HIFU 3.0, HIFU 4.0, and HIFU 5.0 probes are available for sale. 

1. After cleaning the face, apply a medium to the skin. It is recommended to use the skin care products you often use, such as lotion, aloe vera gel, etc. as the medium. (Essential oils and essences containing alcohol are not suitable for use) 2. After adjusting the HIFU and RF energy to the highest level that feels comfortable.Use the lifting and holding techniques. The Face treatment use time is 15–45 minutes. The eye area use time is 10-15 minutes.(Ultrasonic waves are not visible to the naked eye. If you need to test whether ultrasonic waves are working properly, you can fill the container with water for testing.) 3. Clean the facial skin with water and apply a moisturizing mask. For better results, we suggest using a mask cover to promote the absorption of the moisturizing mask For deep wrinkles: 15 sessions per course Time of use:Use every 7–10 days For sensitive skin: use every 15–20 days