Layering Filler at Two Depths: The Dual-Plane Approach

A 2015 report from two Italian clinicians describes a "dual-plane" way of using hyaluronic acid filler: restoring deep support close to the bone first, then refining the more superficial fat layers at a later visit. They reviewed their experience with 147 patients over five years. The approach makes anatomical sense, but the report is a description of one practice's results rather than a comparison with other methods.

Why this was studied

Facial ageing is not just a matter of skin. Over time, bone gradually changes shape, and the face's fat is arranged in separate pockets, or compartments, that shrink or shift at different rates. Deep compartments near the bone help hold up the tissues above them, while superficial compartments sit just under the skin. Our article on facial bone loss and ageing explains how these changes combine.

The authors' reasoning was that rebuilding the foundation first, then fine-tuning the surface, should give a more natural result than filling lines and hollows directly.

What the researchers did

The authors looked back at 147 consecutive patients they had treated over five years, almost all of European background. In the first stage, firmer filler was placed in small amounts deep against or just above the bone in areas such as the cheekbones, the area under the eyes, the chin and along the jawline. Each small deposit was kept to a fraction of a millilitre.

In a later session, usually about four to six weeks afterward, softer and more spreadable filler was placed in superficial fat at the temples, the cheeks and in front of the ears, along with selected work around the chin and the upper part of the nasolabial fold. Each compartment was treated separately, since the thin walls between compartments limit how far filler spreads.

What they found

Patients had an average of just over four sessions each, with an average total of about 12 millilitres of filler per person spread across those visits. Most returned for maintenance once or twice a year. Many also had other treatments alongside, including neuromodulator, retinoid skincare, threads or laser, which is common in practice but makes it harder to know what produced the result.

Results were described in words and photographs rather than measured with scales or satisfaction scores. For side effects, bruising was recorded in roughly one in five sessions. Seven patients, just under 5%, had an inflammatory reaction or a firm lump (nodule). Some settled on their own; others needed treatment with steroid medication or the filler-dissolving enzyme. The authors felt these reactions were linked more to certain firmer, more cross-linked products than to the technique itself.

How strong is this evidence?

This is an uncontrolled case series, a summary of one practice's experience. It is useful for describing a technique and giving a sense of side-effect rates, but it has clear limits:

• No comparison group. It cannot show that the dual-plane approach is better than other methods.
• Subjective outcomes. Results were judged by the treating clinicians, which can introduce bias.
• Mixed treatments. Many patients had other procedures at the same time.
• Limited diversity. Nearly all patients were of European background, and the text gives little detail on age or sex.
• Older evidence. Products and techniques have evolved since 2015, though the anatomy has not.

What it means for you

The underlying idea, support first and refinement second, is widely shared in facial injecting today. In practice, it may mean your clinician recommends treating an area you did not expect, such as the cheekbone rather than the fold beside the nose, or spreading treatment over more than one visit. Staging allows swelling to settle and gives you both a chance to review before adding more. Our article on nasolabial folds and marionette lines discusses why folds are often not filled directly.

The report's side-effect figures are also a useful reminder that filler is a medical procedure. Bruising is common, and lumps or inflammatory reactions, though uncommon, do occur and sometimes need treatment. Rarely, filler can block a blood vessel, which needs urgent care. Contact your clinic right away if you notice increasing pain, skin colour changes such as blanching or a dusky or mottled look, or any change in vision after treatment.

Filler is generally postponed during pregnancy and breastfeeding, and with active skin infection or cold sores in the area. Some autoimmune conditions and medications need to be discussed in advance.

The study's figure of several sessions and about 12 millilitres per person over five years is also a reminder that facial rejuvenation with filler is often a gradual, long-term commitment rather than a one-time event. Before starting, it is worth thinking about whether you are comfortable with regular maintenance, how you would feel if you decided to stop, and how your goals fit with your budget. Hyaluronic acid filler gradually breaks down, so results fade over time, and the rate varies between people and areas.

Finally, filler only addresses volume and support. Skin quality, sun damage and fine texture usually respond better to skincare, sun protection, laser or other skin treatments, which is why many of the patients in this report also had other treatments.

Questions to ask at your consultation

• Which areas would provide support, and which are for refinement?
• Would you stage treatment, and how far apart would visits be?
• Which kinds of product would you use at each depth, and why?
• What signs after treatment should make me call right away?

Frequently asked questions

Does deeper filler mean more risk?

Every depth has its own risks, and important blood vessels run at different levels in different areas. Safe technique depends on detailed knowledge of anatomy for each zone rather than on depth alone.

Why not do everything in one visit?

Some people can, but staging lets swelling settle and allows the result of the deeper work to be judged before more filler is added, which can help avoid overcorrection.

Will I need as much filler as in this study?

Not necessarily. Amounts vary widely with age, anatomy and goals, and some people need little or none.

To find out whether a staged filler plan suits you, a consultation at HealthPark Medical Aesthetics includes a full facial assessment and a clear explanation of risks and alternatives.

Source

Salti G, Rauso R. Facial rejuvenation with fillers: the dual plane technique. Journal of Cutaneous and Aesthetic Surgery, 2015. Read the study