Ultrasound Cavitation Adelaide — Stage 1: Non-Invasive Fat Cell Destruction

Non-Focused 40kHz Inertial Cavitation

The Ultralux V4 / Pro 40kHz handpiece emits non-focused (unfocused) ultrasound — energy disperses through tissue in a broad pattern, not concentrated at a focal point. At the fat cell membrane interface, compression and expansion cycles create microbubble formation. These bubbles undergo inertial cavitation — rapid expansion and violent collapse — generating localised pressure waves that rupture fat cell membranes.

Non-Focused vs Focused Ultrasound — The Critical Difference

Non-focused ultrasound (the 40kHz handpiece): energy disperses broadly through tissue. The superficial skin receives maximum energy intensity due to depth-related reduction. Effective for broad subcutaneous fat deposits. Focused ultrasound (High Intensity Focused Ultrasound): energy concentrated at a precise subcutaneous focal point while sparing overlying skin. These are fundamentally different technologies. The Ultralux V4 / Pro uses non-focused cavitation — not High Intensity Focused Ultrasound.

Post-Cavitation: What Happens to the Released Fat

Triglycerides (fats) released from ruptured fat cells enter the fluid between cells, are transported via the lymphatic system, and pass through circulation to the liver for metabolic processing and elimination. This is why liver and kidney function are clinical prerequisites — compromised liver or kidney function cannot safely clear the additional metabolic load. Adequate hydration (2 litres per day) and light exercise post-treatment support clearance.

Preparing for Your Session

• Hydration: Drink a minimum of 2 litres of water per day for 72 hours before your session. Cavitation bubbles cannot form efficiently in dehydrated tissue.
• Diet the day before: Follow a low-calorie, low-fat diet for 24 hours before treatment. This reduces the fat load on the liver during the processing window immediately after the session.
• No alcohol: Avoid alcohol for at least 48 hours before your session. The liver prioritises processing alcohol above all other tasks — including clearing the fat released by cavitation.
• Pain relief medications: Avoid anti-inflammatory medications such as Nurofen and Naprogesic for at least 48 hours before treatment, as these increase bruising risk.
• Clothing: Wear loose, comfortable clothing over the treatment area.

What the Treatment Feels Like

Most clients describe cavitation as a warm, relaxing sensation — similar to a firm massage with mild warmth. The handpiece moves continuously in circular motions over the treatment area with ultrasound coupling gel applied throughout.

You may hear a faint buzzing or ringing sound in your ears during the session. This is completely normal, harmless, and stops the moment the handpiece is removed. It occurs because the 40 kilohertz frequency sits at the upper edge of the human hearing range. Some clients notice it; others do not register it at all.

No anaesthetic is required. Each treatment area takes 30 minutes. There is no recovery time — you can return to normal activities straight away.

After Your Session

Your body continues processing released fats for over 72 hours. What you do during this window affects your results:

• 2 litres of water per day for 72 hours — supports lymphatic transport of released fats to the liver
• Low-calorie, low-fat diet for 48 hours — prevents circulating fats from being re-stored in remaining fat cells
• No alcohol for 48–72 hours — keeps the liver free to clear mobilised fats
• Light walking or gentle exercise within 24 hours — a randomised controlled trial confirmed significantly greater fat reduction when cavitation was paired with post-session activity (Taha et al. 2021)
• Consider a lymphatic drainage massage within 24–48 hours to support clearance of released fats — we offer this as part of our wellness menu. See our Lymphatic Drainage Massage service →

Absolute Contraindications

Liver disease of any kind — including non-alcoholic fatty liver disease (a common and often undiagnosed condition), hepatitis, cirrhosis · Kidney disease or renal impairment · Significant heart or cardiovascular conditions · Pregnancy · Breastfeeding · Active or recent history of cancer · Pacemaker or any implanted electronic device including cochlear implants and neurostimulators · Metal implants in or near the treatment area · History of deep vein thrombosis or blood clotting disorders · Epilepsy · Severely compromised immune system · Open wounds or active skin infections in the treatment area.

Areas Not Suitable for Treatment

Bony prominences — ultrasound reflects off bone, causing discomfort and reducing efficacy. Do not treat directly over ribs, the spine, the bony pelvis, or areas with less than 2 centimetres of subcutaneous fat. Cavitation does not reach visceral fat (fat stored around the internal organs inside the abdomen) — it only affects subcutaneous fat. The head, neck, and joints are not suitable treatment areas.

Essential Aftercare

For 48 hours after every session: drink a minimum of 2 litres of water per day · Follow a low-calorie, low-fat diet — released fats circulate in the bloodstream and can be re-stored in remaining fat cells if caloric intake is high · Avoid alcohol — the liver must process mobilised fats and alcohol competes for the same metabolic pathway · Light walking or exercise encourages lymphatic drainage and is clinically shown to improve results. Skipping aftercare is the primary reason for poor or absent results.