Dermal Fillers & Facial Contouring — Comprehensive Guide

In Simple Terms

What this page explains

Fillers are shaping and support tools that change volume, contours and shadows in the face. This page details the mechanisms, material types, and how to choose the right approach — including when fillers are not the answer.

What this is not

This is not a page offering a "quick fix" and not a sales page. Fillers are a good tool when used correctly — and require precise anatomical knowledge and understanding of limitations.

What Are Fillers

Dermal fillers are injectable materials administered into different facial layers — dermis, subcutaneous tissue, above bone — to change volume, create support, or soften transitions between areas. Unlike neuromodulators (Botox) that affect muscle movement, fillers work on the structural component.

Main Material Types

There are several types of fillers, each with a different mechanism, duration and application areas. It is important to understand that not every filler is suitable for every area and every goal.

• Hyaluronic acid (HA) — The most common material. A natural molecule present in body tissues, chemically cross-linked to maintain stability. Can be dissolved with hyaluronidase. Very versatile — available in soft versions for near the eyes to strong versions for the jawline. Duration: 6–18 months depending on area and product.
• Calcium hydroxylapatite (CaHA / Radiesse) — Calcium microspheres in a carrier gel. Provides immediate mechanical support and also triggers a collagen stimulation response. Not reversible with enzyme. Suitable for areas requiring strong structural support — jaw, chin, deep cheeks. Duration: 12–18 months.
• Poly-L-lactic acid (PLLA / Sculptra) — Not really a "filler" in the classic sense. Does not add mechanical volume but triggers a controlled inflammatory response that leads to collagen production. The result is gradual and cumulative. Suitable for diffuse volume loss, less for targeted shaping. Duration: up to two years and beyond.

In practice, the boundaries are not always sharp. Radiesse, for example, is both a "filler" and a "biostimulant." The choice between materials depends on anatomy, goal and existing tissue condition.

How Fillers Work: Mechanical Volume vs. Tissue Integration

It is important to understand that fillers do two different things — and sometimes a combination of both:

Mechanical Volume

Injecting material into tissue pushes it outward. This is an immediate change — "what you inject, you see." The material takes up physical space and changes contours. Typical example: HA injection into lips or jawline. This is the simplest, but also the area where it is easy to err — because "more" does not necessarily mean "better."

Tissue Stimulation (Tissue Integration)

Some materials — especially CaHA and PLLA — trigger a fibroblast response that produces new collagen around the injected material. The result is not immediate, but more durable and looks more natural because the tissue itself changes. HA also causes a degree of tissue stimulation, but this is not its primary mechanism.

Understanding this difference is critical: if the problem is diffuse tissue loss and poor skin quality, a filler that provides only "mechanical volume" may give a result that looks "artificial" — because it adds material beneath thin, lax skin. In such cases, tissue quality improvement should come before or alongside volume.

Our Approach: Anatomy First, Always Conservative

At La Clinica we work according to clear principles that prevent undesirable outcomes:

1. Anatomical assessment before every injection — Layer mapping, vascular identification, understanding structural relationships. Not "filling along lines" but injection according to anatomy.
2. Layered approach — Injection at different depths with different products. A deep layer for structural support, a more superficial layer for transition softening. Not "all the volume in one spot."
3. Conservative first treatment — "Too little" is better than "too much." You can always add at a follow-up visit; wait for swelling to subside and see the final result. Removing filler (even HA) is a less predictable process than adding.
4. Protecting natural movement — Filler that restricts facial expressions or changes skin dynamics during movement looks artificial. The goal is improvement at rest and in movement.

Treatment Areas: Brief Overview

Each facial area brings specific anatomical challenges, suitable products and different risks. The detailed pages explain each area in depth.

Important to remember: the treatment area is only part of the decision. The specific anatomical condition — skin thickness, tissue state, blood vessels — determines whether filler is the right tool and which product is suitable.

Quality vs. Volume: When Filler Is the Right Tool

One of the most common mistakes in aesthetic medicine is using filler as the answer to what is actually a tissue quality problem. It is important to distinguish:

When filler is the right tool

• Clear volume loss: hollow, shadow, contour that has disappeared — a change stemming from fat, bone or soft tissue resorption
• Structural asymmetry: difference between sides in the nasal dorsum, jawline, cheeks
• Active contouring: adding lip border definition, chin projection, jawline sharpening
• Transition softening: when there is a sharp "break" between areas (e.g. cheek-eye transition)

When filler is not the right tool

• Skin quality problem — thin, translucent skin with poor texture. Adding volume beneath poor-quality skin will amplify the problem. The skin quality needs addressing first (PN, PRF, biostimulants).
• Significant laxity — when the skin is "falling" with actual excess, filler can add weight and worsen things. In such cases, other approaches or surgery should be considered.
• Expecting reduction — Filler adds. It does not make the nose smaller, the cheeks smaller, or remove fat. It is sometimes possible to create an optical illusion (adding volume around an area so it "appears" smaller), but this is a limited technique.
• Expecting a surgical result — Filler improves; it does not change bone structure. If the expectation is a dramatic structural change, surgery is the right tool.

Risks and How to Minimize Them

Every injection is a medical procedure with risks. The difference between a practitioner who causes complications and one who minimizes them lies in three areas: anatomical knowledge, technique, and decision-making process.

Complications to be aware of

• Vascular occlusion — The most serious complication. Injection into or pressure on a blood vessel can cause ischemia and in rare cases tissue necrosis or vision impairment. Prevention: precise anatomical knowledge, aspiration, slow injection, use of cannulas in high-risk areas.
• Tyndall effect — When HA filler is injected too superficially, it appears as a bluish discoloration under the skin. Particularly common under the eyes. Prevention: correct layer, appropriate product, minimal quantity.
• Granulomas — A delayed inflammatory response of the body to the foreign material. Less common with HA, more common with permanent materials. Treatment: steroids, sometimes hyaluronidase.
• Migration — Movement of material from the injection point. More common in lips and around the mouth. Prevention: correct technique, controlled quantity, appropriate viscosity product.
• Asymmetry — Sometimes unavoidable due to baseline asymmetric anatomy. Prevention: meticulous assessment, conservative approach, follow-up.

What reduces risks in practice

• Deep anatomical knowledge — especially vascular mapping and layers
• Aspiration before injection (checking the needle is not inside a blood vessel)
• Slow injection, with small quantities per pass
• Cannula use in areas with high vascular risk
• Familiarity with emergency protocol (hyaluronidase always available)

The detailed page on possible complications and how to prevent them expands on each complication separately.

What to Expect: Swelling, Duration and Process

Correct expectations are a critical part of treatment. "Before and after" on social media presents an inaccurate picture — usually photographed immediately after (with swelling) or after editing.

Swelling timeline

• Days 1–3 — Significant swelling, especially in lips. This is not the final look. Do not judge the result at this stage.
• Days 4–7 — Gradual decrease. Bruises (if present) begin to fade.
• Weeks 2–4 — Settling. HA absorbs water and stabilizes, the tissue adjusts. This is the true assessment point.

Duration by area and product

Important to understand: these numbers are averages. Actual duration depends on individual metabolism, physical activity, sun exposure and more. Some people break down HA faster.

When Fillers Are Not the Answer

Part of our medical approach is knowing when not to use a tool — even if the patient requests it. There are situations where filler will worsen the condition or fail to achieve the goal:

• Very thin, translucent skin — The filler will be visible under the skin, giving an unnatural look. Dermal quality needs improvement first.
• Significant skin laxity — Filler under lax skin will not "stretch" it. It will add weight and can worsen the sagging.
• Expecting reduction — As noted, filler adds. "Nose reshaping" with filler does not make a nose smaller — it adds volume at strategic points. If the goal is truly reduction, the tool is surgery.
• History of recurrent reactions — Recurrent granulomas, hypersensitivity to materials, previous surgeries in the area that alter anatomy.
• Unrealistic expectations — "Look like..." or "erase 20 years" — these are expectations filler cannot meet. An honest conversation before treatment is more important than technique.

Frequently Asked Questions

Does filler hurt?

Most fillers contain lidocaine (anesthetic). Topical numbing cream is also used before treatment. Pain level varies by area — lips are more sensitive, cheeks less so. Most patients report tolerable discomfort.

How much filler is needed for a treatment?

There is no single answer. It depends on anatomy, goal and baseline condition. Our approach is to start with minimal quantity and reassess after settling. "Less" is almost always better than "more" — you can add, it is harder to remove.

What is the difference between filler and Botox?

Botox (neuromodulator) works on muscle — relaxing movement that creates wrinkles. Filler works on structure — adding volume or support. They are different tools for different problems, and sometimes complement each other. A separate page explains when and how to combine.

Can filler be dissolved?

HA filler — yes, using hyaluronidase (an enzyme that breaks down hyaluronic acid). Other filler types (CaHA, PLLA) — cannot be enzymatically dissolved. This is one reason HA is considered safer for beginners. More on filler dissolving.

Does filler "stretch" the skin over time?

In reasonable quantities and correct intervals — no. The skin returns to its state when the filler is absorbed. But repeated injections in large quantities over years can cause tissue stretching (especially in lips). This is another reason for a conservative approach.

Continue Reading (Sub-Topics)

• Non-surgical rhinoplasty: the Eiffel technique and other approaches
• Lip augmentation: a natural and precise approach
• Cheek filler and midface volume restoration
• Jawline and chin contouring
• Under-eye filler: when yes and when no
• Filler types: HA, Radiesse, Sculptra — comparison
• Possible complications and how to prevent them
• Filler dissolving (hyaluronidase): when and why