Cavitation technology has taken the beauty world by storm—but what do those mysterious numbers (40K, 80K) on cavitation machines really mean, and how do they affect your treatment results?
Understanding Cavitation Technology
What Is Ultrasonic Cavitation Technology?
Ultrasonic cavitation is a non-invasive body treatment. It uses ultrasound waves to create tiny bubbles in the fat layer under your skin. These bubbles form and collapse quickly, causing fat cells to break apart. Your body then removes the broken-down fat naturally.
The frequency of the ultrasound waves is measured in kilohertz (kHz). Different frequencies target fat in slightly different ways. Lower frequencies reach deeper fat, while higher frequencies work closer to the surface.
This technology is used for body contouring and may help with skin tightening. It does not break the skin and relies on your body’s natural processes to remove fat after treatment.
The treatment is not a substitute for weight loss but can assist with shaping areas that are hard to change with diet and exercise.
What Do 40K and 80K Mean?
The numbers 40K and 80K refer to the frequency of the ultrasound waves produced by the ultrasound cavitation device—specifically, 40,000 kHz (40K) and 80,000 kHz (80K). Frequency impacts how deeply the sound waves travel into your fat tissue—Higher frequencies correspond to shorter wavelengths, resulting in shallower penetration into fat layers.
Differences between 40k & 80k Cavitation
- 40K ultrasonic cavitation machines send out fewer, stronger ultrasound waves per second. These waves penetrate deeper, so 40k radio frequency is often used for breaking down stubborn fat deposition areas, including the abdomen, thighs, flanks, and hips. It can be better for clients with more body fat or those targeting larger areas.
- 80k ultrasonic cavitation machine use a higher frequency, sending out more ultrasound waves per second. The waves are more gentle and stay closer to the skin’s surface. 80k radio frequency may be used for areas with limited fat accumulation, like arms, neck, chin, or smaller pockets of fat.
Below is a comparison table about the key differences between 40K cavitation and 80K cavitation for a more intuitive understanding.
| Feature | 40kHz Cavitation | 80kHz Cavitation |
|---|---|---|
| Frequency | 40,000 Hz | 80,000 Hz |
| Wavelength | Longer | Shorter |
| Penetration Depth | Deeper (4-6cm) | Shallower (1-2cm) |
| Best For | – Large areas (abdomen, thighs) – Deep fat layers |
– Small, precise areas (double chin, arms) – Superficial fat |
| Treatment Sensation | More noticeable vibration | Gentler, more comfortable |
| Session Duration | Slightly longer (due to deeper penetration) | Typically shorter |
| Ideal Candidate | Those with noticeable fat deposits | Those with mild fat or for touch-ups |
| Results Visibility | More dramatic after fewer sessions | More gradual, requires more sessions |
In brief, if your main goal is to significantly reduce excess fat or reshape bigger parts of your body, 40k cavitation machines may be more effective. If you want gentle contouring and skin tightening on smaller zones, 80k cavitation machines can work well.
Key Benefits of 40K vs 80K Cavitation Machines
Benefits of a 40kHz Cavitation Machine
1. Deeper Fat Reduction
- The 40kHz frequency penetrates deeper into subcutaneous fat layers (up to 5-6 cm), making it ideal for larger fat deposits.
2. Better for Thick or Dense Fat
- Effective for stubborn fat areas that require stronger cavitation effects.
3. Stronger Fat Liquefaction
- The lower frequency creates more intense bubbles, leading to more efficient fat cell disruption.
4. Faster Visible Results
- Since it targets deeper fat, users may see quicker contouring effects in fewer sessions.
Benefits of an 80kHz Cavitation Machine
1. More Precise & Gentle
- The higher frequency (80kHz) has a shallower penetration (1-3 cm), making it safer for delicate areas.
2. Better for Skin Tightening
- Stimulates collagen production, improving skin elasticity and reducing sagging after fat loss.
3. Less Discomfort
- Gentler on the skin, reducing the risk of bruising or redness, ideal for sensitive clients.
4. Thermal Effect
- Different from a 40k cavitation machine, an 80k cavitation machine generates a mild thermal effect that contributes to additional skin and tissue benefits.
40K vs. 80K Cavitation Machine from Osano
40K Cavitation Machine
The Professional Ultrasonic Cavitation Machine from osano is a premier body sculpting device that combines 40K Cavitation, RF technology, and lipo laser technology for effective fat reduction, skin tightening, and overall body rejuvenation.
Details:
80K Cavitation Machine
The OSANO 9 in 1 Cavitation Machine for Home Use or Salons combines advanced technologies like lipo laser, 4C cavitation, and cryolipolysis for effective fat reduction, body shaping, and skin tightening, all with minimal side effects and no downtime.
Treatment Results:
- Fat Reduction
- Body Contouring
- Skin tightening
- Cellulite Smoothing
- Inch loss
What are the steps of cavitation treatment?
1. Pre-Treatment Preparation
- Cleanse: Start with clean skin—use an alcohol-free cleanser to remove oils and impurities.
- Gel Application: Apply a thick layer of ultrasound conductive gel. This creates a seamless barrier for optimal wave transmission.
- Pro Tip: Warm the gel slightly for a more comfortable experience.
2. Treatment Protocol by Frequency
For 40K Cavitation (Deep Treatment):
- Use slow, overlapping circular motions
- Spend 5-7 minutes per 10x10cm area
- Keep the handpiece perpendicular for maximum depth penetration
For 80K Cavitation (Precision Treatment):
- Faster, smaller circular movements
- Focus 3-5 minutes per targeted zone
- Maintain light contact for superficial fat disruption
3. Post-Treatment Care
Immediate Aftercare:
- Wipe off residual gel with a damp cloth
- Apply soothing aloe vera gel if redness occurs
24-Hour Protocol:
- Drink 1-2L water to support lymphatic drainage
- Avoid alcohol, caffeine, and salty foods
- Skip saunas/hot showers to prevent inflammation
4. Maximizing Your Results
Session Frequency:
- 40K: 1-2 sessions/week (minimum 72h apart)
- 80K: 2-3 sessions/week (48h intervals)
Expected Timeline:
- Visible changes after 3-5 sessions
- Optimal results typically at 8-12 sessions
Frequently Asked Question
What should you consider when choosing between a 40k and an 80k cavitation machine?
Think about the thickness of the fat you want to target and which body areas you want to treat. For deeper or larger fat, 40k may be better. If you plan to work on thin layers or sensitive areas, 80k could be safer and more comfortable. Also, consider your budget and comfort with the equipment.
Are there any specific areas or conditions where 80k cavitation is preferred over 40k?
80k cavitation is sometimes preferred for the face, neck, and smaller body areas. This is because it is gentler and focuses on surface fat. You might also choose 80k if you have less dense fat or sensitive skin. For larger areas like the abdomen or thighs, 40k is often a better option.
