Nanofat and microfat in the face: what they are, what is known

Nanofat and microfat entered the vocabulary of facial harmonization through two doors: regenerative medicine, which talks about the cells and factors found in fat, and the search for alternatives to synthetic material. They are terms that sound modern and safe, because the material "comes from the patient." That is precisely why they deserve a careful reading: autologous origin does not guarantee safety, and the evidence is still being built.

This text is a review. It does not describe harvesting, processing, or injection technique, which belong to the qualified professional and, in the case of liposuction, to someone with the competence for a surgical act, following the rules of their professional board and health regulations. For the glossary entries, see nanofat and facial fat grafting.

What are they, exactly?

The terminology is not fully standardized in the literature, and that is part of the problem. In general:

Note: the boundaries between categories vary between authors and services. What one service calls "nanofat" may be different at another. So when reading a study or hearing an offer, it is always worth asking: what was the harvesting method, how was it processed, and what exactly was injected.

What does the proposal promise and what does the literature support?

The hypothesis behind nanofat is that fat contains adipocytes, stromal cells, and factors that may influence skin regeneration. The proposal is to apply this material in or near the dermis to improve texture, color, and quality, including in atrophic scars.

The state of the evidence deserves honesty:

• The available studies tend to have small samples and heterogeneous protocols, with preparation methods that differ from one another.
• Many have subjective outcomes or unblinded assessment.
• Follow-up tends to be short.
• Results with one method do not automatically transfer to another.

This does not mean it does not work. It means the professional should present it as a possibility under study, not as an established technique. To read this literature critically, see how to read an injectables clinical trial and how to keep up with the scientific literature.

What are the risks?

The risks add up in two layers: those of harvesting and those of injection.

Harvesting by liposuction

It is a surgical procedure, with risks of anesthesia, infection, bleeding, irregularities, and scars in the donor area. It requires a compatible setting, team, and qualification.

Injection in the face

The face is a high vascular risk region. Facial fat grafting has reports of embolism and vascular occlusion, including serious visual complications such as amaurosis. See vascular embolism, vascular occlusion, and visual complication after filler.

Other cited risks include:

• variable and unpredictable graft resorption;
• irregularities and nodules (oil cysts);
• asymmetry;
• infection;
• a result far from the expectation.

Unlike hyaluronic acid, there is no "antidote" equivalent to hyaluronidase to reverse injected fat. This point weighs on the decision and must be in the consent.

For whom does it make sense, and whom to refer?

The indication depends on a qualified surgeon, clinical assessment, and experience. For the facial harmonization professional who does not perform liposuction, the role is to:

1. Recognize the concern that could be addressed this way (volume loss, scar, skin quality).
2. Explain honestly what is known and what is not.
3. Refer to a professional with the competence and experience, when the patient shows interest.
4. Follow up with the patient after the procedure, if appropriate, and keep records.
5. Be prepared for complications, especially vascular ones.

See referring patients in facial harmonization to structure communication with the colleague.

If the professional performs the procedure within their qualification, they must follow the rules of their board and the health requirements, with detailed records, specific consent, and an emergency plan. In case of off-label use of any associated product, that information must be stated.

How to avoid overpromising in the practice and in advertising

The vocabulary of regenerative medicine invites exaggeration: "stem cells," "regeneration," "biological rejuvenation." The professional should resist that invitation for three reasons. The first is ethical, because the patient decides based on what they hear. The second is regulatory, because the advertising rules of professional boards and CONAR restrict promises and result comparisons. The third is practical: whoever promises a lot and delivers little pays with reputation and complaints.

A simple rule helps. Describe what the procedure is, what it aims for, what the literature supports in summary, and what the risks are, in that order. If the patient asks whether it "works," answer that there are reports of improved texture and scars in small studies, that the response varies, and that a result cannot be promised. That answer sells less and is easier to defend.

How to talk with the patient

Patients often arrive enchanted with the idea of "using their own fat." The conversation should welcome the interest and reset the expectation.

Record the conversation in the patient record and update the informed consent.

How does Harmy enter the conversation?

Harmy does not simulate nanofat, microfat, or fat grafting. It simulates volume in marked areas, generically, without distinguishing the material. It can support the conversation when the patient's goal is to restore volume in an area, but it does not represent the behavior of any specific material.

For the app workflow, see how to use Harmy.

Review quiz

Nanofat and microfat occupy an interesting space between regeneration and volume, but they still call for more study than marketing. The role of the facial harmonization professional is to inform with caution, recognize the limits of their own competence, refer well, and be ready for what can go wrong.