Facial & Neck Skin Laxity
Facial and neck skin laxity is one of the most visible signs of overall aging. The skin loses firmness and sags, the jawline loses its crisp definition, and loose neck bands ("turkey neck") or a double chin appear. The problem is not limited to the epidermis or upper dermis; it reflects deeper structural decline, from the superficial muscular fascia down to the ligaments that hold the soft tissues in place.
The neck and lower face are under constant strain from gravity, movement of the platysma muscle and gradual loss of subcutaneous fat. Over time, breakdown of elastin and type I collagen fibers, together with stretching of the retaining ligaments, lets the soft tissues slide downward and changes the overall proportions of the face.
At Haute-Derma, our treatment of facial and neck laxity rests on three principles: tightening the deep SMAS layer, stimulating new dermal collagen and restoring lift along multiple vectors. The goal is a refined, V-shaped contour and smoother, firmer neck skin, achieved safely.
Causes and Anatomy of Facial and Neck Sagging
Laxity and sagging of the face and neck stem from weakening at three anatomical levels:
- Weakening of the SMAS and the Platysma:
- SMAS (superficial musculoaponeurotic system): the fibromuscular layer that envelops the muscles of facial expression. When it loses elasticity and slackens, the fat and skin above it slide forward and downward.
- Platysma: a thin sheet of muscle running from the chest up the neck to the lower jaw. When its fibers weaken and separate, the loose vertical neck cords (platysmal bands) typical of an aging neck appear.
- Breakdown of Elastic Fibers (Elastosis) and Dermal Collagen: UV exposure and internal oxidative stress cause elastin fibers to lose their recoil, while type I collagen is broken down by matrix metalloproteinases (MMPs). The skin loses its springy scaffolding and becomes lax, thin and unable to support itself.
- Fat Pad Descent and Stretching of the Retaining Ligaments: the anchoring ligaments (such as the zygomatic and mandibular ligaments) lengthen over time, so the superficial fat compartments drift from their original position, creating a double chin, jowls at the jaw angle and deep horizontal neck lines.
Grading Facial and Neck Laxity
| Grade | Appearance of the Face and Neck | Underlying Anatomical Change |
|---|---|---|
| Grade 1 (Mild) | Jawline starting to soften; neck skin slightly loose when looking down | Loss of superficial collagen elasticity; early SMAS laxity |
| Grade 2 (Moderate) | Obvious double chin, loss of jawline definition, faint neck bands | Lax SMAS; descent of superficial fat compartments |
| Grade 3 (Severe) | Heavy jowls at the jaw angle; prominent tight neck bands (turkey neck) | Retaining ligament failure, deep fat atrophy, severe SMAS laxity |
Examination, Vector Assessment and Diagnosis at Haute-Derma
- Facial Structure and Sagging Vector Analysis: The doctor assesses how the soft tissues shift with the patient standing and lying down, and identifies the main direction of descent (typically a 45-degree oblique vector toward the jaw angle and chin).
- Measuring SMAS Depth and Subcutaneous Fat: A dedicated skin ultrasound device measures the thickness of the subcutaneous fat and the depth of the SMAS, matched to the 1.5 mm, 3.0 mm and 4.5 mm treatment cartridges.
- Platysmal Band Assessment: The patient is asked to tense the neck so we can tell whether the sagging comes from lax skin or from an overactive platysma; overactive neck muscles are additionally treated with muscle-relaxing injections.
Our Lifting and Firming Protocol for the Face and Neck
At Haute-Derma, face and neck lifting follows a multilayer, non-surgical approach:
- Deep Layer (SMAS and Ligaments): We use HIFU (high-intensity focused ultrasound) or radiofrequency (RF). Heat is focused precisely at 3.0 mm and 4.5 mm, reaching 65–70°C and creating thermal coagulation points that tighten the SMAS immediately and stimulate new collagen to firm the tissues.
- Dermis and Soft Tissue (Vector Lifting and Biostimulation):
- Thread lifting: barbed PDO or PCL threads are placed in the subcutaneous layer along the lifting vectors. They act as a biological scaffold that pulls sagging tissue back toward its original position and continuously stimulates fibroblasts to make collagen along the thread path.
- Firming mesotherapy: microinjections of PDRN combined with hyaluronic acid and peptides along the neck and jawline to restore surface elasticity.
- Surface Layer (Protection and Maintenance): We prescribe targeted anti-aging skincare (peptides, low-strength retinoids) and broad-spectrum sunscreen that also covers the delicate skin of the neck.
