Fat transfer breast augmentation is not simply about injecting fat. To achieve natural and lasting results, it is essential to select the proper layer of injection based on the purpose.

Subcutaneous Layer

• Used mainly for shaping, not for large volume increase.
• Corrects issues such as rib visibility, a wide cleavage gap, or irregularities along the inframammary fold (bust line).
• Frequently used in hybrid breast augmentation to create a smooth, natural breast contour.
• Fat survival rate is relatively low (30–40%), and nodules can sometimes be felt under the skin.

Subglandular Layer

• Provides the most projection and roundness to the breast.
• Essential for patients seeking noticeable breast enlargement.
• Higher injection volumes increase the risk of lumps.

Intramuscular (Within the Pectoralis Major Muscle)

• Has the highest fat survival rate (about 50%) due to rich blood supply.
• A balanced 1:1 ratio of subglandular and intramuscular injection often leads to both stable volume and natural shape.
• Even if nodules develop, they are rarely detectable from the surface.

Submuscular Layer

• Has relatively low survival rates and is not always necessary.
• However, in some cases it helps correct nipple or breast displacement by supporting central positioning when combined with other layers.

Key Point: Clearly Communicate Your Desired Result

Since the choice of injection layer and amount greatly influences the outcome, it is crucial for patients to explain their ideal breast shape to the surgeon. Together, the patient and surgeon can then determine the best strategy for fat placement.

Our Commitment at AVAN TOKYO Ginza Liposuction Clinic

At AVAN TOKYO, we perform fat grafting with meticulous precision from harvesting to injection. Our focus is on combining natural aesthetics with high survival rates.

• Anatomy-based planning and marking
• Layer-specific injection techniques to minimize nodules and asymmetry
• Hybrid augmentation to improve both safety and stability

We don’t simply “add volume.” We design breasts that harmonize with each patient’s body shape and personal goals, providing a truly tailored and refined result.

Fatgrafting Breastaugmentation Before/After