# DeepPlane.com — /what-is-deep-plane-facelift/anatomy-diagram

> Machine-readable markdown summary. Full article: https://deepplane.com/what-is-deep-plane-facelift/anatomy-diagram
> Last built: 2026-04-19 · Medically reviewed by Dr. Yakup Duman, MD.
> License: CC BY 4.0 — Source: DeepPlane.com

## Frequently asked questions

### What is the deep plane in deep plane facelift?

The 'deep plane' is a natural loose areolar tissue layer that sits beneath the SMAS and above the facial muscles. It is normally bloodless, which is why dissection there permits wide tissue mobilization without vascular risk. Operating in this plane lets the surgeon release retaining ligaments and lift skin + fat + SMAS + muscle as one composite unit.

*Topics: anatomy, technique*

## Fact-checked claims on this page

- **False** — The SMAS layer is a single uniform layer of consistent thickness throughout the face
  - Source: Plastic & Reconstructive Surgery (https://pubmed.ncbi.nlm.nih.gov/2243041/)
- **True** — Deep plane facelift requires releasing retaining ligaments to allow natural tissue repositioning
  - Source: JAMA Facial Plastic Surgery (https://pubmed.ncbi.nlm.nih.gov/33776049/)

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