Invisible Linked is the Rheolyse family of cross-linked hyaluronic acid fillers: four formulations for the dynamic planes of the face. The idea is not to add volume for its own sake, but to calibrate support to the plane being treated.
The four products share the same hyaluronic acid concentration — 25 mg/ml — and the same principle. One thing changes, and it is the one that counts: the elastic modulus G', that is, how much the gel resists and holds its shape.
Why link the chains.
Pure hyaluronic acid is resorbed quickly: it hydrates, but it does not support. Cross-linking binds the chains into a stable network, and the gel gains two qualities: persistence over time and the capacity to bear a load. This is what separates a volumising filler from a biorevitaliser.
More than how much cross-linking, what matters clinically is the behaviour that results. And behaviour can be measured: it is the language of rheology, where G' describes support and tan δ the character of the gel.
It is not the quantity of product that determines the clinical outcome, but its behaviour in tissue. — Rheolyse Manifesto
From 30 to 200 Pa.
With the hyaluronic acid held constant, Invisible Linked moves G' along a continuous scale: 30, 100, 200 Pa. It is a gradient, not a set of unrelated products. The deeper the plane, the more support is needed; the closer to the surface, the more the gel must adapt to movement without making itself felt.
Keeping the hyaluronic acid concentration fixed and varying only the behaviour is a deliberate choice: it isolates the clinical variable that really counts, G', and makes it comparable from one product to the next.
A G' for every plane.
Here is how the gradient translates into four instruments, from the most superficial plane to the deepest.
Hydrafine — 30 Pa, superficial
The softest in the line. It works on facial tissue quality, supporting skin elasticity and turgor: periocular lines, fine skin texture, superficial irregularities. High diffusion in tissue, 30G needle.
Sublimelip — 100 Pa, lips
Controlled volume and harmonious eversion for natural lip reshaping. It supports the border where definition is needed: Cupid's bow, vermilion, lip mucosa. 27G needle.
Dynamic — 100 Pa, dynamic
Flexible, elastic support that follows expression. Conceived for the mid planes in motion, following facial dynamics while respecting anatomy: nasolabial folds, glabellar lines. 27G needle.
Deeplift — 200 Pa, structural
The most elastic. Indicated for the correction of skin laxity and the restoration of structural volumes, it supports the architecture of the face: cheekbones, nasal dorsum, jawline. 27G needle.
choosing the right G' for the treated plane.
A line you can read.
The advantage of a gradient is that it reads like a map. Faced with a deep plane that has lost support, you move up the G' scale; for a superficial correction, you move down. The decision starts from the anatomy and dynamics of the face, not from the name on the box.
It is this coherence that makes Invisible Linked a useful instrument in practice: one line, one rheological language, across the whole spectrum of dynamic planes. The parallel line, Invisible Pure, works instead on skin quality with pure, non-cross-linked hyaluronic acid.
