Understanding the Difference Between 4D, 7D, and 11D HIFU Machines: What Really Matters

At HUSH Clinical, we often get asked what the terms 4D, 7D, and 11D mean when it comes to HIFU (High-Intensity Focused Ultrasound) treatments. These terms can be confusing, and many believe that higher numbers automatically mean a better machine or superior treatment results. In reality, these numbers are just marketing labels that refer to the different depths a HIFU machine can treat.

In this post, we’ll explain the real meaning behind these terms, what you should look for in a HIFU treatment, and why depth matters more than the number in front of the "D."

What Do 4D, 7D, and 11D Mean in HIFU Machines?

The numbers in 4D, 7D, and 11D don’t actually indicate the machine's quality—they simply refer to how many different depths the machine can target. At HUSH Clinical, we use an 11D HIFU machine, meaning we can treat up to 11 depths. But does that make a significant difference for your treatment?

Not necessarily. For most non-surgical facelifts and skin-tightening treatments, we focus on three key layers of the skin. These layers include:

• Epidermis (1.5mm) – the outer layer of your skin, where fine lines and pigmentation issues may arise.
• Dermis (3.0mm) – the deeper skin layer where collagen production happens. Targeting this layer helps with wrinkle reduction and improving skin texture.
• SMAS Layer (4.5mm) – this is the layer where the skin attaches to muscle, which is targeted in traditional facelifts. HIFU is the only non-invasive treatment that can reach this layer, making it a powerful option for both face lifting and body tightening.

If you want more detailed information on the science behind how HIFU works, visit our HIFU treatment page for in-depth explanations and benefits.

Why the "D" in HIFU Machines Isn’t as Important as You Think

The term "D" in 4D, 7D, or 11D HIFU machines is mainly a marketing term. While more depths can provide more flexibility for treating different areas, it's not always necessary to treat beyond the three main layers mentioned above—especially for non-surgical facelifts.

That’s why choosing an experienced practitioner who understands how to use the machine at the right depths is critical. At HUSH Clinical, we have over 30 years of expertise in skin treatments, and we tailor every HIFU session to each client's unique needs.

If you're curious about how HIFU can help you achieve younger-looking skin or reduce cellulite, check out our HIFU treatment options here.

Why Depth Matters in HIFU Treatments

The real key to effective HIFU treatments lies in reaching the correct depths beneath the skin to trigger collagen production and skin tightening. The machine's ability to target specific layers is what makes HIFU so effective at lifting and tightening the face and body without surgery.

For example:

• Treating the epidermis helps smooth fine lines and improve skin texture.
• Targeting the dermis stimulates collagen production, improving skin elasticity and reducing deeper wrinkles.
• Reaching the SMAS layer (4.5mm) is where the real lifting occurs. This is the same layer surgeons target during a facelift, but HIFU achieves this without the need for invasive surgery.

At HUSH Clinical, we use an 11D HIFU machine to provide the most comprehensive treatment options, whether you're looking for a non-surgical facelift, skin tightening, or body sculpting.

To explore if HIFU is right for you, schedule a free consultation. We offer in-person and video consultations so we can assess your skin and recommend the best treatment plan tailored to your goals.

The Importance of Choosing the Right Practitioner

Not all HIFU treatments are created equal. Just because a machine can treat at multiple depths doesn’t mean it will automatically give you the best results. The experience of the practitioner is crucial in determining the outcome.

At HUSH Clinical, we’ve spent years perfecting our HIFU techniques to ensure our clients get the best results possible. Our team is highly trained to understand both the technology and anatomy of the skin, ensuring you get a safe and effective treatment.

When you’re ready to experience the benefits of HIFU for yourself, get in touch with us or book an appointment here.

Frequently Asked Questions

Q: What is the difference between 4D and 11D HIFU machines?

A: The difference lies in the number of depths each machine can treat. A 4D machine can treat fewer depths, while an 11D machine, like the one we use at HUSH Clinical, can target up to 11 different layers of skin. However, for non-surgical facelifts, we usually focus on the three main depths (epidermis, dermis, SMAS) for optimal results.

Q: Is HIFU safe for all skin types?

A: Yes, HIFU is generally safe for all skin types. At HUSH Clinical, we tailor every treatment based on your skin type and specific concerns to ensure the best results with minimal risk.

Q: How long do HIFU results last?

A: Results from HIFU can last up to 18 months or longer, depending on the individual. You may notice immediate lifting, with continued improvement over 2-3 months as collagen production increases. For long-lasting results, we recommend maintenance treatments every 9 to 18 months.

Final Thoughts: Choose HUSH Clinical for Your HIFU Treatments

At HUSH Clinical, we combine state-of-the-art HIFU technology with our deep expertise to deliver exceptional results for skin tightening, non-surgical facelifts, and body contouring. Whether you're looking to reduce wrinkles, firm sagging skin, or lift and tighten the face and body, we have the skills and technology to make it happen.

Ready to start your journey to healthier, firmer, and younger-looking skin? Book your consultation today and let us help you achieve the skin you've always wanted.