Creating localized directional stretching in materials.

I am trying to create a dynamic skin material/texture for a realistic character. I am rather new with Unreal so I am doing a lot of experimentation. One of the things I’d like to have is the ability to stretch skin pores based on animations. During research I found that blurring the pores in the direction of the deformation leads to a reasonably good result, however, I have no idea how to create this effect.

I assumed that there would be a basis directional blur node that I’d be able to perhaps mask together with the regular map but I can only find a circular blur.

Does anyone have any idea of how such an effect could be achieved?