Following Difficult on modeling human head, I have followed a bit of the box modelling tutorial mentioned in the comments.

The head I got has a similiar issue at two points; there's a spike and a "camel mount" in two different places, near the nose and above at the head.

With Face Normalization:

Face Normalization

With Subdivision Surface 4x:

Subdivision Surface

If I adjust more the back of the head, it doesn't still solve the "camel mount" issue:


I did not need to recalculate the Normals as the answer points since I have used a cube to build the head. First I added a cube, then applied only one Subdivision Surface and followed the tutorial until after the Modelling a Jaw chapter.

X-Ray enabled:

X-Ray Enabled

  • $\begingroup$ Please consider uploading your file with blend-exchange.com. It could be because of double vertices : in Edit Mode, press A, right-click Merge Vertices > By Distance ? $\endgroup$
    – Lutzi
    Commented Mar 31 at 13:20
  • $\begingroup$ @Lutzi I have added it. Unfortunately, not double vertices! $\endgroup$
    – Hydroper
    Commented Mar 31 at 13:31

1 Answer 1


You have internal geometry, creating artifacts when combined with Subdivision Surface.

  • Go to Edit Mode with Tab
  • Set Viewport Shading to Wireframe with Z
  • Be sure x-ray is on with Alt+Z
  • Select the 2 inner vertices, near the nose and forehead
  • Delete them with X > Vertices

Before and after :

Before and after removing 2 bad vertices


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