TEOSYAL® RHA4

Product Overview: TEOSYAL® RHA 4

TEOSYAL® RHA 4 is a sterile, non-pyrogenic, transparent, viscoelastic gel based on resilient hyaluronic acid (RHA) technology, incorporating 0.3% lidocaine hydrochloride for patient comfort. As the most robust formulation in the TEOSYAL® RHA line, RHA 4 is specifically designed for significant volume creation and contouring in dynamic, mobile areas of the face. Manufactured by Teoxane Laboratories (Geneva, Switzerland), it utilizes the patented RHA process which aims to preserve the natural structure of HA chains, allowing the gel to integrate and move cohesively within tissues subject to stretching and compression.

This formulation is indicated for restoring lost volume and augmenting features such as the cheeks and chin, and for correcting deep skin depressions in areas with thick skin cover.

Note: TEOSYAL® RHA 4 is intended for administration only by licensed medical professionals with expertise in facial anatomy and advanced dermal filler injection techniques.

Mechanism of Action and Properties

TEOSYAL® RHA 4 leverages Resilient Hyaluronic Acid (RHA) technology formulated to provide substantial volume and projection while maintaining dynamic properties. Its specific rheological profile (high strength and moderate stretch) makes it suitable for injection into deeper tissue planes, such as the subcutaneous or pre-periosteal layers, where significant volume support is required. The RHA technology allows the gel to deform and recover its shape effectively during facial movements, aiming for a natural result both at rest and during expression. The hyaluronic acid component provides immediate volume augmentation and contributes to tissue hydration.

The inclusion of 0.3% lidocaine hydrochloride acts as a local anesthetic, significantly improving patient comfort during and immediately following the injection procedure.

The duration of effect typically lasts for many months, although individual results depend on factors such as patient metabolism, treatment area, volume injected, and practitioner technique.

Indications and Usage

TEOSYAL® RHA 4 is primarily indicated for volume restoration and contouring in dynamic facial areas, including:

• Cheek augmentation
• Chin augmentation and contouring
• Correction of deep facial depressions and folds in areas with thick skin
• Restoration of facial volume loss associated with aging
• Jawline definition

Injection depth is typically subcutaneous or pre-periosteal, depending on the specific indication and anatomical location. Administration must be performed by qualified practitioners using appropriate aseptic techniques and injection methods.

Expected Outcomes

Appropriate use by a skilled professional aims to achieve:

• Significant restoration or enhancement of facial volume (e.g., cheeks, chin)
• Improved facial contours and definition
• Correction of deep skin depressions
• Maintenance of natural facial expression and dynamism
• A volumized yet natural appearance

Potential Adverse Events

Practitioners must inform patients about potential side effects associated with deep filler injections. Potential adverse events include:

• Common Reactions (Typically Transient): Injection site swelling, bruising, erythema (redness), pain, tenderness, palpable firmness or lumps. These effects are usually mild to moderate and resolve within one to two weeks.
• Less Common/Rare but Serious Reactions: Prolonged swelling or firmness, significant hematoma, infection, inflammatory reactions, hypersensitivity/allergy, nodule or granuloma formation, skin discoloration, abscess, vascular complications (including compression or intravascular injection, which are rare but serious and require immediate management), nerve effects (rare), tissue necrosis (rare).

Thorough knowledge of facial anatomy and safe injection techniques is paramount. Patients should be instructed to report any severe, prolonged, or concerning reactions immediately.

Storage Conditions

Store between 2°C and 25°C. Protect from freezing and direct sunlight. Ensure packaging is intact prior to use.

Disclaimer: This information is a summary. Medical professionals must refer to the complete product information literature accompanying TEOSYAL® RHA 4 before administration. The product information literature contains crucial details regarding indications, contraindications, warnings, precautions, injection techniques, and management of potential adverse events.