How to Use the 40K 6-in-1 Ultrasonic Cavitation Machine: Complete Step-by-Step Guide for Professionals
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How to Use the 40K 6-in-1 Ultrasonic Cavitation Machine: Complete Step-by-Step Guide for Professionals

Looking for a complete guide on how to use a 40K 6-in-1 Ultrasonic Cavitation Machine safely and effectively? This professional tutorial covers every step — from setting up your machine and preparing clients, to using each function correctly and achieving the best body contouring results.
If you’re an aesthetic practitioner or salon owner, understanding how to operate the 40k 6 in 1 cavitation machine is essential for delivering safe, visible, and consistent outcomes. This guide also explains the science behind the technology, professional protocols, and what makes this device one of the most in-demand non-invasive fat reduction systems of 2025.
Introduction: What Is a 40K 6-in-1 Ultrasonic Cavitation Machine?
The 40k 6 in 1 cavitation machine is a professional-grade aesthetic system designed to break down fat cells, tighten skin, and improve overall body contour using ultrasonic cavitation and radio frequency (RF) technology.
It combines six advanced functions in one platform:
40kHz Ultrasonic Cavitation
RF Skin Tightening
Vacuum Therapy
LED Photon Light
Body Sculpting Massage
Microcurrent Lifting (on some models)
This combination allows practitioners to perform comprehensive body and face treatments that address fat reduction, skin elasticity, lymphatic drainage, and collagen regeneration — all in a single session.
Why the 40K Cavitation System Is So Popular Among Professionals

Professionals rate this system highly in 40k cavitation machine reviews for its versatility, affordability, and consistent client results.
Unlike single-purpose fat reduction tools, the 40k ultrasonic cavitation machine targets both surface and deeper fat layers, while also tightening and toning the skin — eliminating the need for multiple standalone devices.
With its multi-functional design, clinics can offer clients full-body transformation packages, improving profitability and treatment efficiency.
✅ Non-surgical and pain-free
✅ Immediate circumference reduction
✅ CE-certified safety standards
✅ Effective for abdomen, arms, thighs, buttocks, and chin
How Ultrasonic Cavitation Works

The 40k ultrasonic cavitation machine uses low-frequency sound waves (40,000 Hz) to penetrate subcutaneous fat tissue. These waves create microscopic bubbles that implode (cavitate), causing the fat cell membranes to rupture.
The released fatty acids and glycerol are metabolised naturally through the lymphatic system. This process — known as lipolysis — leads to measurable reductions in body circumference and improved contour.
When combined with vacuum therapy and RF technology, the results are significantly enhanced, stimulating collagen, improving lymphatic flow, and tightening the skin.
Understanding Each Function on the 6-in-1 System
1. Ultrasonic Cavitation (40kHz)
Targets deep, stubborn fat deposits.
Works best on abdomen, hips, and thighs.
Duration: 10–20 minutes per zone.
2. RF (Radio Frequency)
Heats dermal layers to stimulate collagen production.
Improves skin texture, firmness, and tone.
Ideal for post-cavitation tightening.
3. Vacuum Therapy
A vacuum therapy machine function included in the system enhances lymphatic drainage.
Helps eliminate fat cell waste products post-cavitation.
Reduces puffiness and cellulite.
4. LED Light Therapy
Supports skin healing and rejuvenation.
Blue light: acne & inflammation
Red light: collagen & anti-ageing benefits
5. Body Sculpting Massage
Encourages fluid movement and detoxification.
Aids muscle tone and circulation.
6. Microcurrent Lifting (on some models)
Provides low-level electrical impulses for toning facial muscles.
Improves elasticity and definition.
Professional Treatment Protocol: Step-by-Step
Step 1: Consultation and Preparation
Begin with a full client consultation to assess medical history, contraindications, and treatment goals. Key contraindications include pregnancy, pacemakers, metal implants, and severe cardiovascular issues.
Mark the treatment area with a white pencil to define boundaries. Cleanse and disinfect the skin thoroughly.
Step 2: Apply Conductive Gel
Apply a thin, even layer of ultrasonic cavitation gel to the target area. This ensures smooth movement of the handpiece and optimal energy transfer.
Step 3: Select Cavitation Function
On the control screen, choose the 40kHz cavitation mode and adjust the intensity according to the treatment zone. Beginners should start with medium settings and increase as tolerated.
Use circular or figure-eight motions while maintaining continuous contact with the skin.
Treatment time: 10–20 minutes per area (do not exceed 30 minutes total per session).
Maintain slow, steady movements — avoid staying in one spot to prevent discomfort.
Step 4: Combine with Vacuum Therapy
Switch to the vacuum therapy machine function to promote lymphatic drainage. Move the suction head towards the nearest lymph nodes, using upward or outward motions.
This step helps mobilise liquefied fat and accelerate toxin removal. Adjust suction levels based on client comfort.
Step 5: Follow with RF Skin Tightening
Select the RF handpiece and apply a conductive gel. Glide the applicator in small, circular motions until the skin reaches 38–42°C (monitored by built-in sensors).
RF treatment after cavitation helps tighten and tone the area by stimulating collagen and elastin production.
Step 6: LED or Microcurrent Finish
End with LED light therapy or microcurrent lifting if your ultrasonic cavitation machine for sale includes these functions. These finishing touches enhance the results, leaving skin smoother and more radiant.
Step 7: Aftercare Advice
After the session, advise clients to:
Drink at least 2 litres of water per day
Avoid alcohol or high-fat foods for 48 hours
Engage in light exercise or sauna use to promote lymphatic drainage
Book a course of 6–8 sessions for best results
Treatment Frequency and Duration
For best outcomes, offer a course of 6 to 10 sessions, spaced 3–7 days apart.
Each area should receive no more than 20 minutes of ultrasonic exposure per session to prevent fatigue or skin sensitivity.
Professional results typically appear after 3–4 sessions, with noticeable centimetre loss and improved skin texture.
Techniques for Maximum Results

Circular Motion Technique
Use slow, overlapping circular movements for large areas like abdomen or thighs. Maintain constant motion to ensure even distribution of ultrasonic energy.

Zig-Zag Motion Technique
For smaller areas or contour definition, use a zig-zag or “S” shaped movement pattern. Ideal for love handles and upper arms.
Lymphatic Drainage Direction
Always move towards lymphatic drainage points (groin, armpits) when using the vacuum or massage probes. This prevents fluid retention and enhances fat elimination.
Temperature Monitoring
Professional devices feature real-time temperature sensors — maintain optimal skin surface temperature between 38–42°C for safe RF operation.
Common Mistakes to Avoid
❌ Using cavitation on bone or near the heart
❌ Staying in one spot too long (risk of heat spots)
❌ Neglecting hydration and post-care advice
❌ Treating clients with contraindications
❌ Skipping vacuum therapy or RF steps
Following proper training and protocols ensures both client safety and exceptional results.
Real Professional Results (According to 40k Cavitation Machine Reviews)
40k cavitation machine reviews consistently highlight results such as:
Visible inch loss after 3–4 sessions
Improved skin firmness and tone
Reduction in cellulite appearance
Enhanced lymphatic drainage and smoother contour
Many professionals report that clients see up to 4–6 cm reduction in targeted areas after a full course, especially when combined with balanced diet and hydration.
Pricing and Profitability
A typical cavitation treatment costs between £60 and £120 per session.
With a single ultrasonic cavitation machine for sale costing between £800–£1,500, you can recoup your investment within the first month.
Offering package deals (6–8 sessions) and combination treatments with RF or LED will increase both profit and client retention.
Maintenance and Cleaning
Wipe all handpieces with alcohol-free disinfectant after each session.
Empty and clean vacuum filters weekly.
Check connection hoses and plugs regularly.
Replace gel filters as per manufacturer guidance.
Store in a dry, ventilated area to prevent moisture damage.
Routine maintenance keeps your 40k 6 in 1 cavitation machine performing safely and reliably for years.
Safety and Compliance
Always use CE-certified systems and ensure the ultrasonic cavitation machine for sale you purchase includes:
CE and RoHS certification
UK-standard plug and voltage (220–240V)
Instruction manual and user training
Warranty of at least 12 months
These ensure compliance with UK and EU safety standards for professional beauty equipment.
FAQ: 40K 6-in-1 Cavitation Treatments
Q1: How soon can clients see results?
Results are often visible after the first session, but optimal results develop after 6–8 treatments.
Q2: Is the treatment painful?
No. Clients typically feel gentle warmth or tingling during the session.
Q3: Can cavitation help with cellulite?
Yes. The vacuum therapy and RF functions both help reduce the appearance of cellulite.
Q4: How long do results last?
Permanent fat reduction occurs in treated cells, but maintenance treatments are recommended every few months.
Q5: Can men use this treatment?
Yes — it’s suitable for all genders. Popular areas include the abdomen and chest.
Q6: Is cavitation safe for facial use?
Only when using the correct low-power RF or microcurrent probes designed for facial zones.