How to choose hyaluronic acid type and firmness — the complete filler guide by area
"Just go with hyaluronic acid" — multiple clinical reports point out that a mistaken choice of product or judgment of the injection site can lead to the risk of serious complications.
There are dozens of types of filler products. Firm ones, soft ones, ones that spread, ones that stay in place.
If you mistake the match between a product's properties and the injection site, there is a risk not only of an unnatural result but also of adverse effects on the tissue.
When intravascular misinjection occurs, cases leading to blindness or skin necrosis have been reported, especially at high-risk sites such as the glabella, nose, and periorbital region.
The criteria for product selection are inseparable from the anatomical characteristics of each site.
What you will learn in this article:
- The scientific criteria for the "firmness (viscosity, elasticity, cohesivity)" of hyaluronic acid filler and how to choose it
- The optimal filler properties and injection approach required by area (especially the nose, under the eyes, and so on)
- The latest injection techniques to improve safety, and the essential knowledge for avoiding complications
"It's just a minor procedure, so it's fine" — that perception can sometimes lead to trouble after the procedure.
It is true that hyaluronic acid is convenient. The downtime is short, and in an emergency it can be dissolved with hyaluronidase.
However, regarding "which product, in which layer, in what amount" — when the choice is mistaken, multiple clinical reports show that there is a risk of tissue changes remaining even after dissolution treatment.
For those considering which clinic to choose or what procedure to have, we explain the criteria for filler selection by area on an evidence basis, drawing on the latest clinical research.
If you find yourself thinking, "What about my case?"
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Author of this article
Hiromitsu Nakamura Ginza Clinic Physician
Zetith Beauty Clinic Ginza, Osaka, and Fukuoka clinics
He has a track record of research presentations at domestic and international academic conferences, and is also engaged in technical guidance and education for Zetith Beauty Clinic as a whole. He specializes in precise aesthetic medicine based on anatomical grounds, pursuing natural results tailored to each person's bone structure and tissue.