Open nose surgery incision scar, columella scar!!

It's been a month since my nose surgery.
 
My columella is not red, but rather dark? It's dark; Why is this like this?
 And the incision line along the columella line and into the nostril appears as a light pink solid line, and the area around the solid line is also dark...ㅜㅜ
 This...is going to disappear, right...? How long will it take??
 
The scar didn't rise up, and there was a slight dent, but it wasn't too bad.
 The hospital prescribed eye ointment and did not tell me to apply scar ointment.
 I've been applying Dermatix Ultra about once a day, but I'm wondering if I can apply it even though I don't have keloid scars where the skin sticks out.