Masking and Blending of eyebrows

I wants to know how to change the texture for eyebrow because model don’t have any seperate eyebrow mesh on it and when I am applying it to its face mesh it is making the face white. So I came to know i have to do masking and blending but how can i do that in code or any 3d software.

To edit the texture file, you can use any image editing tool like Photoshop or Photopea as a free alternative