Create sharp indents or ridges by pushing or pulling the mesh, while pinching the vertices together.
Crease can also be used to sharpen and polish existing creases.
Enable pressure sensitivity on Strength to regulate the add/subtract effect while pinching creases.
Adds a consistent pinching effect to your stroke.
If set to 0 it the brush will behave like the
Draw brush.
If set to 1 and the brush strength set to 0, the brush
will behave like a Pinch brush.
Merknad
More info at General brush settings
and on Advanced brush settings.