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Hyaluronic Acid for Jawline Contouring: Definition, Structure, and Facial Harmony

Published Sep 17, 2026 1 min read

Hyaluronic Acid for Jawline Contouring: Definition, Structure, and Facial Harmony

By Dr. Laura Ríos | Physician and Surgeon (IPN) – Specialist in Aesthetic Medicine (UNAM)

When we think about defining the jawline, there is often a misconception that we need to radically alter the shape of our face. Modern aesthetic medicine takes a completely different approach to this procedure: improving proportions, adding structure, and creating a smooth, elegant transition between the face and neck, while always respecting each patient’s unique features.

1. How does hyaluronic acid improve jawline projection and contour?

Hyaluronic acid is a biocompatible, resorbable gel designed to add volume and support and to provide cross-linking at strategic anatomical points. When precisely placed in the lower third of the face, it can improve jawline definition, increase projection in areas with structural deficiencies, and make the mandibular angle (gonion) more pronounced.

However, this treatment is not simply a matter of placing product indiscriminately. Before any injection, a thorough medical assessment is essential, taking into account the bone structure, the quality and firmness of the soft tissues, the distribution of facial fat, and the overall proportions of the face.

This content is for informational purposes and does not replace an in-person medical assessment. Any treatment recommendation is confirmed during a consultation.

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