When considering combining treatments like Ultrasonic Cavitation and HIFU (High-Intensity Focused Ultrasound) for the stomach, it's important to prioritize safety and effectiveness. Generally, after receiving HIFU treatment, it's advisable to wait for a period of time before undergoing additional procedures like Ultrasonic Cavitation. Typically, it's recommended to wait at least 4 to 6 weeks after a HIFU session before proceeding with Ultrasonic Cavitation. This waiting period allows your skin and tissues to heal and adapt to the changes induced by the HIFU treatment, ensuring optimal results and minimizing the risk of adverse effects. Additionally, consulting with a qualified dermatologist or aesthetic practitioner is crucial. They can provide personalized advice based on your specific treatment plan, skin type, and health condition, ensuring that the combination of treatments is safe and effective for your needs.