Dermal Fillers: Complete Guide to Types and Brands
Not all dermal fillers are created equal. This comprehensive guide explains the different types of fillers, leading brands available in Canada, and how practitioners select the right product for each treatment area and patient.
The dermal filler market has expanded dramatically over the past decade, offering practitioners an impressive range of products with distinct physical properties, injection depths, treatment indications, and durability profiles. Understanding these differences is essential for any aesthetic practitioner who wants to deliver consistently excellent, safe outcomes tailored to each individual patient. At Ziba Aesthetics Training Institute, product science is taught alongside injection technique because a practitioner who understands why they are choosing a particular filler—not just how to inject it—is a significantly more capable clinician. This guide covers the major categories of dermal fillers, the leading brands available in Canada, how product rheology determines clinical suitability, and the key factors practitioners consider when selecting a product for a specific patient and treatment area.
Types of Dermal Fillers: A Category Overview
Dermal fillers can be categorized by their base material, which determines their mechanism of action, longevity, and reversibility. The dominant category is hyaluronic acid fillers, which represent the majority of treatments performed globally due to their excellent safety profile and reversibility. Other categories include calcium hydroxylapatite, poly-L-lactic acid, and polymethylmethacrylate (PMMA), each with specific indications and risk profiles.
Hyaluronic Acid Fillers: The Gold Standard
Hyaluronic acid is a naturally occurring glycosaminoglycan found in human skin tissue, making HA fillers highly biocompatible and well-tolerated. HA fillers work by attracting and binding water molecules, providing immediate volumization that softens with tissue hydration over the following days. Their most important clinical advantage is reversibility—HA fillers can be dissolved with hyaluronidase in an emergency, making them the safest choice for high-risk anatomical areas.
Biostimulator Fillers: Collagen-Stimulating Products
Products such as Radiesse (calcium hydroxylapatite) and Sculptra (poly-L-lactic acid) work by stimulating the body's own collagen production rather than providing immediate volumization. These fillers are particularly effective for global facial rejuvenation, skin quality improvement, and areas where natural-feeling results are prioritized over precise contouring. Their non-reversibility makes patient selection and injection precision more critical.
Understanding Filler Rheology: G Prime, Cohesivity, and Viscosity
Filler rheology—the study of how a material deforms and flows under stress—is the scientific framework practitioners use to match product properties to clinical requirements. The key rheological parameters are G prime (elastic modulus or stiffness), cohesivity (how well the gel holds together), and viscosity (resistance to flow). Understanding these properties enables practitioners to select fillers that will behave as desired in the tissue environment they are injecting into.
G Prime: Matching Stiffness to Injection Depth
High G prime fillers are stiffer and provide better structural support, making them ideal for deep injection in areas requiring volumization and lift—such as cheeks, chin, and jawline. Low G prime fillers are softer and more fluid, making them appropriate for superficial placement in fine lines, lip body, and tear troughs where a stiffer product would be visible or palpable.
Cohesivity and Product Spread
A highly cohesive filler maintains its shape as a unit and resists migration, which is desirable in anatomically defined areas such as the lip vermillion border or tear trough. Less cohesive products spread more readily in tissue, which can be advantageous for diffuse volume restoration but requires more precise placement to avoid unwanted spreading into adjacent tissue planes.
Leading Filler Brands Available in Canada
Canada's aesthetic market includes several well-established HA filler brands that offer distinct product lines designed for different treatment depths and applications. Juvéderm (Allergan), Restylane (Galderma), and Teoxane are the three most widely used brand families in Ontario clinics. Each brand offers a portfolio of products ranging from fine-line superficial fillers to high-G-prime structural products.
Juvéderm Product Family
Juvéderm's VYCROSS technology crosslinks HA chains of different molecular weights to create a smooth gel with high cohesivity and longer-lasting results compared to earlier HYLACROSS products. The Juvéderm Voluma (cheeks), Volbella (lips/fine lines), Vollure (nasolabial folds), and Volift (lip body) products offer a comprehensive treatment toolkit that many practitioners use as their primary platform.
Restylane and Teoxane Alternatives
Restylane's NASHA and OBT technologies produce HA gels with different particle structures and G prime profiles suitable for a wide range of applications, from Restylane Lyft for cheeks and hands to Restylane Kysse for lip enhancement. Teoxane's RHA (Resilient Hyaluronic Acid) technology mimics the dynamic behaviour of natural HA more closely than conventional cross-linked products, making it particularly effective in high-movement areas.
How Long Do Dermal Fillers Last?
Filler longevity varies significantly by product, injection depth, treatment area, and individual patient metabolism. Understanding durability profiles allows practitioners to set accurate patient expectations and schedule appropriate follow-up appointments. It is also important to explain that longer-lasting fillers are not inherently superior—longevity must be balanced against the risk of migration or product accumulation over time.
Typical Duration by Product Type
Hyaluronic acid fillers typically last 6 to 18 months depending on the product and treatment area. Lip filler tends to last 6 to 9 months due to the high mobility of the area. Structural cheek filler (e.g., Juvéderm Voluma) can last 18 to 24 months. Calcium hydroxylapatite (Radiesse) lasts 12 to 18 months, while poly-L-lactic acid (Sculptra) can provide effects lasting 2 or more years.
Factors That Affect Filler Longevity
Individual metabolism is the primary variable in filler longevity—patients with higher metabolic rates tend to break down HA faster than average. Repeated muscle movement in high-mobility areas (lips, nasolabial folds) accelerates degradation relative to lower-movement zones. Sun exposure, smoking, and poor hydration also negatively impact filler longevity by accelerating HA breakdown.
Ziba Aesthetics Training Institute
Ziba Aesthetics Training Institute at 7191 Yonge St Unit 701, Markham, ON teaches the full science of dermal filler selection and injection technique to qualified medical professionals across Ontario. Call (416) 318-7447 or visit aesthetictraining.ca.
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External Resources
- Health Canada – Licensed Dermal Filler Products
Health Canada's database of licensed medical devices including approved hyaluronic acid and other dermal filler products available in Canada.
- Aesthetic Plastic Surgery Journal – Filler Complication Review
Comprehensive peer-reviewed review of dermal filler complications, risk stratification by product type, and management protocols.
