Had mohs surgery, then skin graft 4 days ago?

It is generally recommended to continue wound care even after sutures are removed, typically for 6-8 weeks. By this time, the wound is usually sufficiently healed, and patients are able to cover the area and camouflage it well with makeup. Before this time, the application of makeup or other products is risky, as infection may result. Continue to use an emollient-based product (e.g.: Vaseline or Aquaphor) over the wound, to help expedite healing, or whatever wound care instructions were given to you by your surgeon.

You will not want to apply makeup to a skin graft until the edges are well-healed. When you see your physician for the suture removal discuss the situation with him/her. Timing depends on the size and location of the graft, as well as how the margins are closing up. "This answer has been solicited without seeing this patient and cannot
be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."