I'm considering shaving my head to get SMP. Should I consider having scar revision surgery before getting SMP done? (Photo)

Scalp Micropigmentation SMP can be a great adjunct after hair transplant surgery to add the look of fullness.  SMP also helps hide old hair transplant scars.  SEE THE VIDEO which is similar to your photo.

There are three possibilities following scar revision: the scar is the same, wider, or thinner.  Often times the surgeon plays a role in all three possibilities, but it is usually a poor procedure that produces a wider scar.  Color is a major issue.  The only thing i've seen consistently reduce the pink color is to place grafts into the scar.  Color is due to increased circulation and blood is red.  If you are going to revise the scar, either do this before the SMP or at least 3 months after the SMP.  You may wish to put SMP into the scar and also possibly graft the scar.  

Scalp pigmentation can be placed onto scar tissue to blend with your surrounding hair. Minimising the size of the scar may help in the overall cosmetic look but the decision is yours. Pigmentation can react slightly different on scar tissue, taking longer to settle on occasions. If you decide to undergo a scar revision then it is best to leave any pigmentation for around a year after or not touch the scar area. As the skin needs to settle before applying any pigment.