How to scale a mesh after it's been combined with another?

A character in my game has her hair applied by combining a hair object with her skeleton. After combining, I can clearly see the hair object in her heirarchy and it has a "transform" attached.

I'd like to scale the mesh (it's a Skinned Mesh Renderer, not a regular Mesh) but using the transform does nothing. I'm not sure why, and I haven't been able to figure that out.

So...

Is there some way to scale the hair mesh without using a transform, but instead using something like the "Mesh class"? It only seems to be for regular meshes (not Skinned Meshes) and it also doesn't seem to have anything related to scaling.

Can anyone point me in the right direction for scaling a sub mesh through scripting without using a transform? I'm using Javascript.

If your hair is skinned, then you should be able to scale the bones that it is skinned too (not the bone that hair-skinnedMeshRenderer is attached to).

You should be able to edit/modify mesh by modifying the vertices. This link should have some recourses about procedurally modifying meshes: http://unity3d.com/support/resources/example-projects/procedural-examples

I have a similar question. I would like to use the same model with the same animations for several characters in my game but with varied sizes. The skinned mesh renderer seems to allow no way to dynamically scale. Would love to hear more suggestions.