Is It Normal for my Excision Site to Be White?

I would recommend that you consider a shave excision for the mole on your nostril.  The procedure can be done within a few minutes.  

Although removing elevated moles by any method from any location is likely to leave a small scar, scalpel sculpting, which involves no deep cutting or stitches has, in my experience, proven quite successful for achieving gratifying aesthetic results while leaving little, or often barely...

If the mole is raised, it's possible that it could be shaved off and would not require any sutures.  If the mole is flat, then it would need to be surgical excised.  If that were the case with your mole, I would excise it vertically and the incision would need to be longer than the...

If the lesion is raised, then a shave excision can be done.  If flat, then a complete surgical excision of the lesion can be done.  Either way, a scar will result.  And either way, it should be sent to pathology prior to doing any laser procedure on the area.  

A mole should not be lasered without knowing exactly its pathology.  A biopsy should always be done prior to any laser procedure.  The redness should improve with time, however if you have any concerns about its healing, then I recommend that you see your physician. 

In this situation, it may be best to do a scar revision by completely surgically excising the scar and making a new incision.  It is important to follow through with post-care as this will help the scar heal as best as possible.