The range of dermal fillers is broader and more complex than ever. Brands such as Stylage, Belotero, and Revolax each offer extensive portfolios, making the distinction between the different types a daily challenge for professionals. Selecting the right filler for a specific indication and a unique patient is, however, crucial for achieving predictable, superior results. The correct product choice not only reinforces your craftsmanship but also guarantees patient safety and satisfaction, while addressing concerns about product quality and authenticity.
This guide is your complete, pragmatic manual. We offer an in-depth overview of the composition, rheological properties, and key differences between the A-brand fillers you use in your clinic. You will learn to apply objective selection criteria to make the optimal choice for every treatment. This enables you to work with greater confidence, optimise outcomes for your patients, and make your procurement process more efficient and reliable. Stay ahead in a rapidly evolving market and strengthen the reputation of your practice.
The basics of dermal fillers: more than just volume
In modern aesthetic medicine, dermal fillers are indispensable tools for volume restoration and contour enhancement. From a medical perspective, a dermal filler is a gel-form implant designed to add subcutaneous or intradermal volume. For a detailed overview of classifications and history, see the reference What are fillers?. The primary mechanism of action is the direct filling of space, leading to immediate correction of wrinkles or volume loss. Good tissue integration is critical here for a natural result.
Beyond this primary effect, modern fillers offer secondary benefits such as hydration — particularly with hyaluronic acid based products — and the stimulation of neocollagenesis. The latter is a key property of biostimulators. The focus on biocompatibility and biodegradability guarantees the safety and temporary nature of the treatment, a fundamental requirement in aesthetics. It is essential to distinguish a filler from other injectables: botulinum toxin relaxes muscles, whereas skin boosters primarily target skin hydration and quality without significantly adding volume.
Composition: what are fillers made of?
The choice of material determines the properties and indications of a filler. The most commonly used substances are:
- Hyaluronic acid (HA): The gold standard due to its excellent safety profile, hydrating properties, and reversibility with hyaluronidase. Brands such as Stylage, Belotero, and Revolax are based on it.
- Calcium hydroxylapatite (CaHA): Known from brands such as Radiesse, this material not only provides immediate volume but also stimulates the natural production of collagen for a long-lasting and firm result.
- Poly-L-lactic acid (PLLA): A biostimulator (e.g. Sculptra) that gradually builds volume by powerfully activating collagen synthesis in the skin. The result develops over several months.
Rheological properties: the key to the right result
The effectiveness of a filler depends on its rheological profile. These physical properties determine how the gel behaves after injection and are crucial for selecting the right product per indication:
- Viscosity and elasticity (G'): G-prime (G') or elasticity modulus indicates the stiffness of the gel and its capacity to resist deformation. A high G' means strong lift capacity, ideal for projecting the cheekbones or jawline. A low G' is softer and suitable for superficial lines or lips.
- Cohesiveness: This describes how well the gel particles adhere to one another. High cohesiveness ensures that the filler remains intact, does not migrate, and integrates well — essential for dynamic areas such as the lips.
Classification of fillers: an overview for the professional
A correct product choice starts with a thorough knowledge of the various types of fillers. Classification is mainly based on the base material, duration of action, and function. The industry today almost unanimously prefers biodegradable (temporary) fillers over permanent variants. Permanent fillers carry a significantly higher risk of long-term complications. The focus on the safety of fillers has led to the dominance of biocompatible materials that the body breaks down over time.
Within this category, we distinguish between products that only add volume and biostimulating fillers that activate the skin's own collagen production for a longer-lasting result. A key concept, particularly with hyaluronic acid, is cross-linking: a process that links HA molecules into a firmer and more durable gel.
Hyaluronic acid (HA) fillers: the most versatile category
Hyaluronic acid (HA) is the undisputed gold standard on the market due to its safety profile, efficacy, and reversibility with hyaluronidase. The properties of an HA filler are determined by factors such as the HA concentration (mg/ml) and the degree and technology of cross-linking. This results in a wide range of products with different rheological properties suited to various indications.
- Monophasic vs. biphasic fillers: Monophasic gels (e.g. Belotero, Stylage) are homogeneous and smooth, providing a smooth injection and natural integration into the tissue. Biphasic gels (e.g. Restylane) contain particles in a non-cross-linked gel, providing more projection and lift capacity.
- Indications: Applications range from filling fine perioral lines with a light, fluid filler to deep volume correction and contouring of the cheekbones or jawline with a firm, highly cross-linked gel.
Discover our extensive range of HA fillers and find the perfect product for every treatment.
Non-HA fillers: when to choose an alternative?
While HA fillers dominate the market, non-HA alternatives offer unique advantages for specific indications, primarily through their biostimulating action.
- Calcium hydroxylapatite (CaHA): Known from brands such as Radiesse, CaHA offers immediate lift capacity and structural support. It is ideal for defining the jawline and cheekbones and also stimulates collagen production for a long-lasting result.
- Poly-L-lactic acid (PLLA): A product such as Sculptra is a pure biostimulator. It does not restore volume directly but activates fibroblasts for gradual collagen formation over several months. This makes it excellent for large-scale volume loss.
The advantages of these fillers are a longer duration of action and powerful collagen stimulation. A disadvantage compared to HA is the lack of an immediate dissolving agent, making correct injection technique and indication setting crucial.
How to select the right filler? A step-by-step approach
Selecting the right filler is a crucial step that determines the success of a treatment. This process requires more than just product knowledge; it is a combination of a thorough patient analysis, an in-depth understanding of product properties, and a clear treatment plan. The basis lies in analysing the patient's unique anatomy and skin quality, matching the rheological properties of the filler to the target area and injection depth, and managing expectations. For a harmonious result, such as with a full-face approach, it is often necessary to combine different fillers.
Analysis by treatment area
Each anatomical area places unique demands on the properties of a filler. The choice of a specific product directly relates to the desired lift, projection, and integration into the tissue. The American Society of Plastic Surgeons offers a detailed overview of various types of fillers and their composition, helping you make an informed choice. Below is a practical overview:
- Lips: Require high elasticity and cohesiveness for a natural feel and movement. Products such as Stylage Lips are specifically designed to provide volume while remaining flexible.
- Cheekbones and chin: High G-prime (elasticity modulus) is essential for lift and projection. A firm filler such as Juvederm Volux provides the structure needed to define contours.
- Tear trough: This delicate area requires a product with low viscosity and minimal hydrophilic properties to prevent swelling (oedema) and ensure a smooth transition.
- Fine lines: Superficial wrinkles are best treated with a soft, low-threshold filler that integrates well in the dermis, such as Belotero Soft.
Product choice based on technique
The chosen injection technique also influences the product choice. Fillers with higher viscosity are often better suited for needle injection for precise placement, while softer, more fluid products work well with a cannula for even distribution and less trauma. The choice of a product with or without lidocaine directly impacts patient comfort during treatment. In addition, a carefully selected product combined with the right technique can considerably reduce the risk of side effects such as swelling and bruising.
Leading brands and their specialisations
The market for dermal fillers is highly diverse. Knowledge of the A-brands and their underlying technologies is essential for achieving the optimal result for every client and indication. A professional distinguishes themselves not by being tied to a single brand, but by mastering a portfolio that offers different rheological properties for tailored treatments.
Juvederm (Allergan Aesthetics)
Juvederm is known for the patented Vycross technology. This cross-linking method combines hyaluronic acid chains of different molecular weights, resulting in an efficient and durable gel. This ensures smooth tissue integration and a long-lasting result. The product lines are specifically developed for various applications:
- Vycross line: Voluma (cheek volume restoration), Volift (nasolabial folds), Volbella (lips and perioral lines), and Volux (jawline and chin sculpting).
- Ultra line: A classic, versatile line for various indications.
Belotero (Merz Aesthetics)
Belotero stands out with the Cohesive Polydensified Matrix (CPM) technology. This technique creates a unique gel that integrates seamlessly into the skin, providing a very natural result with no palpable transitions. The range is broad, from Belotero Soft for fine lines to Belotero Volume for deep volume restoration. An important advantage is the low incidence of the Tyndall effect, making this brand a preferred choice for delicate areas such as the tear trough.
Stylage (Vivacy)
Stylage uses IPN-like technology, an advanced cross-linking process. A unique feature is the addition of the antioxidant mannitol. This helps neutralise the free radicals released during injection, leading to less inflammation and post-treatment swelling. The portfolio, from Stylage S to XXL, covers all indications. The focus is on creating natural-looking results with optimal patient comfort.
Other important brands
In addition to these market leaders, there are other established names that have a firm place in the market. Restylane is one of the first hyaluronic acid fillers, known for its excellent lifting capacity and long track record. Revolax is a popular choice that focuses on a very favourable price-quality ratio without compromising on safety and performance.
Every filler has unique properties that make it suitable for specific treatments. It is the expertise of the professional to make the right choice. Compare all top brands in our webshop and build your ideal product portfolio.
Safety and procurement: the professional's responsibility
As a medical professional, delivering safe and effective treatments is your highest priority. This responsibility does not begin with the treatment itself, but already with the procurement of your products. The choice of supplier and the way you manage products are crucial for patient safety and the reputation of your clinic. The use of a non-certified or improperly stored filler can lead to serious complications and legal consequences.
A CE certification is not a suggestion, but a legal requirement for medical devices within the EU. This mark guarantees that the product meets European safety and quality standards. Never buy products through unverified channels such as unknown webshops or social media. The risks — ranging from counterfeits to improper storage — are too great. Authentic packaging is always sealed, features a unique lot number and a clear expiry date. Check these details at every delivery.
Why purchase from a specialised wholesaler?
The choice of a specialised wholesaler is a strategic decision that directly affects the safety and efficiency of your practice. A reliable partner such as Aesthetics Experts offers certainties that are indispensable for every professional.
- Guaranteed authenticity: You receive only original, CE-certified products directly from the manufacturer, including end-to-end cold chain logistics where needed.
- Efficiency: Access to a broad range of top brands in one place streamlines your procurement and inventory management.
- Reliability: Fast and correct delivery ensures you are never without the required products.
- Support: Professional service and expert advice on product questions.
Regulation and compliance in the Netherlands
In the Netherlands, legislation is strict to safeguard patient safety. Only BIG-registered doctors (and, under certain conditions, physician assistants and nurse specialists) may perform filler treatments. Accurate documentation is essential. Always record the lot number and expiry date of the filler used in the patient file. This is not only a legal requirement but also crucial for traceability in the event of an incident. The Dutch Health and Youth Care Inspectorate (IGJ) monitors compliance and can carry out inspections to verify the quality and safety of care.
The right filler: your expertise combined with our reliability
This guide has outlined the complexity of the filler market: from the various classifications and material properties to the crucial selection criteria. The key conclusion is that the success of a treatment depends not only on your technique, but also on the superior quality and safety of the products used. Your reputation as a professional rests on these fundamental pillars.
As your dedicated partner, Aesthetics Experts understands that you do not compromise on quality. That is why we offer a carefully curated range, exclusively for qualified professionals. You are assured of guaranteed original, CE-certified products from leading brands. Optimise your inventory management and service: ordered before 16:00, delivered the next day.
Ready to equip your clinic with the best materials? Create an account and order the perfect filler for your clinic directly. Strengthen your practice with the reliability and efficiency your clients deserve.
Frequently asked questions for professionals
What is the fundamental difference between monophasic and biphasic HA fillers?
Monophasic fillers consist of a uniform, cross-linked hyaluronic acid gel. This results in a smooth and cohesive product that integrates seamlessly into the tissue, ideal for a natural look and fine lines. Examples include Belotero and Stylage. The gel is homogeneous, ensuring a predictable and fluid extrusion.
Biphasic fillers combine cross-linked hyaluronic acid particles in a non-cross-linked gel. This structure provides more firmness and projection, making them suitable for creating structure and volume, such as in the cheekbones or jawline. Brands such as Restylane use this technology for a powerful lifting effect.
Which factors influence the longevity of a filler in the tissue?
Longevity is determined by product and patient factors. Product properties such as the degree of cross-linking, the concentration of hyaluronic acid, and particle size are crucial. A more highly cross-linked, denser filler is more resistant to enzymatic degradation and therefore remains in the tissue longer.
Patient-related factors include metabolism and injection zone. A fast metabolism may break down the filler more quickly. In addition, durability is shorter in areas with a lot of movement, such as the lips, compared to more static zones such as the nose. Lifestyle also plays a role.
How does the addition of lidocaine influence the properties of a filler?
The primary function of lidocaine is to increase patient comfort by minimising pain during and after injection. This is a significant advantage, particularly in sensitive treatment areas. It allows the practitioner to work more precisely with a more relaxed patient.
The influence on rheological properties (such as G-prime and cohesiveness) is generally minimal and is compensated by manufacturers in the formulation. The fundamental performance, lift capacity, and longevity of the filler remain essentially unchanged. Lidocaine has no negative impact on the final result.
What is the Tyndall effect and how can I minimise the risk through product choice?
The Tyndall effect is a bluish discolouration of the skin that occurs when a hyaluronic acid filler is injected too superficially. This phenomenon is caused by the scattering of light by filler particles in the dermis, particularly in areas with thin skin such as the tear trough.
Minimise the risk by choosing a filler with a low particle concentration and high cohesiveness, specifically designed for superficial placement. Products such as Belotero Balance or Teosyal Redensity II integrate smoothly and reduce the risk of light scattering. The correct injection depth, however, remains the most important preventive factor.
How do I handle a patient who wants a filler of a specific brand that may not be the best choice?
Start by acknowledging the patient's wish and ask about the reason for their preference. A professional consultation is essential. Then objectively and clearly explain why the chosen brand may not be optimal for their specific anatomy, skin type, or desired aesthetic result.
Present your recommended alternative and substantiate your choice with clinical arguments and your expertise. Focus on safety and the best possible result. The goal is a joint decision, in which your professional judgement guides the patient to the most suitable and safe option.
What are the key considerations when switching between different filler brands in my clinic?
Analyse the rheological differences. Each brand has unique properties in terms of elasticity (G'), cohesiveness, and viscosity, which affect lift, integration, and feel. Ensure adequate training in the specific injection techniques of the new brand to safeguard the consistency and quality of your results.
Also evaluate the business aspects. Compare cost-effectiveness, supplier reliability, and the breadth of the product portfolio. Make sure the new brand fits the needs of your patients. A phased transition can facilitate smooth integration into your practice.