Fine-Tuning Technology™
Fine-Tuning Technology™ selects molecular weights to tailor the gel’s rheological properties to its intended function.
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Technology / RheologyFrom injection
From injection
to tissue.
Elasticity. Viscosity. Cohesiveness.
Understand the behaviour of a gel.
Experience the difference - Rheological perfection
Over the years, the industry has emphasized the importance of the rheological properties of products and their direct connection to reported reactions and complications. However, the different products on the market do not differ much.
The most common complications caused by the gel over the years are:
- Migration
- Nodules
- Swelling
- Lumps
- Uneven degradation
- Aesthetic deformities
Rheology = clinical behavior. Elasticity (G’) - too low = the gel does not hold its shape. Viscosity - too low = increased risk of migration. Viscosity - too high = increased risk of puddling (an unwanted local accumulation of product).
Cohesiveness, elasticity and viscosity determine whether the gel holds together in the tissue and does not cause migration.
With Molderm Aesthetics’ revolutionary technology, we reach for the first time a completely different level of rheological properties, specifically designed to minimize the most common complications previously caused by fillers.
The right choice of product = patient safety.
Molderm® integrates and anchors itself with surrounding intradermal areas, preventing migration and providing soft, natural results while achieving increased volume, expansion and longer duration.
Traditional fillers have proven limitations in their effectiveness and treatment outcomes. It is widely known that most manufacturers of HA fillers have had great difficulty achieving the perfect balance between cohesion, volume, expansion and safety.
Rheology, clinical relevance and patient safety
Over the years, manufacturers have been keen to highlight published data for their products. These results have been generated in a laboratory environment through individual mechanical tests that do not reflect how the gel actually behaves in the skin tissue. Furthermore, the same product can show different values depending on how the test was conducted.
A common misconception is that, for example, a higher G-Prime value always gives a better lifting capacity. This is completely incorrect as the lifting capacity depends on the other values of the products in relation to the G-Prime value. A sustainable lift in the tissue occurs when elasticity, low energy loss (Tan Delta) and stability at rest interact. A higher G-Prime value increases the risk of palpability, irregularities and migration.
A filler is a viscoelastic gel that is subjected to continuous dynamic loading. Rheology describes how a material deforms, flows and springs back under these forces. Historically, many product-related problems have arisen when the rheological profile of the material does not match the biomechanics of the tissue.
The majority of published studies show that complications such as migration, irregularities, palpability, Tyndall effect and nodules are often strongly related to the deficient rheological properties of the products in relation to the biomechanics of the tissue.
Basic concepts
- G-Prime (elasticity, G’): How much energy is stored elastically and provides structural support.
- Tan ð (viscoelasticity): The balance between elastic and fluid behavior. Lower value = more springback.
- Viscosity: How viscous the gel is at rest and during injection.
- Shear thinning: The gel becomes easier to inject but regains its stability after placement.
Four ways to read a gel.
G-Prime (elasticity)
G-Prime (Pa) shows how firm a product is – not how good the lifting capacity is in practice. The actual and long-term lifting effect is only determined when G-Prime is put in relation to other properties, such as how evenly the product is distributed in the tissue, how well it integrates and how it behaves over time.
Tan ð (viscoelasticity)
Tan ð (Tan Delta) describes the relationship between the viscous and elastic properties of a gel. A lower Tan ð value means that the elastic component dominates, which allows the gel to better recover its original shape after loading. This value is used to understand how the material behaves in tissue and how well it can maintain structure and shape over time, which is relevant when assessing the lifting capacity and stability of the product. Viscoelasticity is an overarching term that describes the combined elastic and viscous properties of a material. Tan ð is a measure used to describe the balance between these two components.
Optimal biomechanical zone in tissue
Molderm® has rheological properties that lie perfectly within the skin’s natural biomechanical zone. This means that the gel is well-balanced and adapted to the tissue, which provides safer treatments and more predictable, natural results. To fall within the Biomechanical Zone requires an optimal balance between the different values of the products.
Shear thinning
Shear thinning describes the ability of a filler to temporarily become less viscous when subjected to pressure or movement, such as during injection. This allows the gel to pass more easily through the needle or cannula. When the load is removed, the filler returns to its original viscosity, helping the material to stabilize in the tissue.
Molderm / Laboratory data
PaElasticity / G′
Storage modulus
View exact values
| Product | Storage modulus |
|---|---|
| TT | 95.6 |
| LIFT | 141.8 |
| VOLUME | 207.3 |
| KISS | 141.8 |