about the use of breast enhancement cup: 1.for people with different breast sizes, it is recommended to use the instrument on the smaller side 5 times, and then use it on both sides. 2. turn the intensity knob from weak to strong, and then adjust the air pressure until the customer feels comfortable. 3. after 20 minutes, turn the air pressure knob to the highest point and the intensity knob to the lowest point to remove the cup. about the use of rf and 40k: 1.we recommend that your treatments in the same area should be separated by 3~5 days, 1~2 times a week. 2.it is to use it together with gel to achieve better results.