Can a lip lift scar become hypertrophic? (Photo)

Lip lift scars can be white and visible. Hidef protocols can help with visible lip lift scars on the face. I see a lot of these in my office in Beverly Hills. Surgery is often not needed if lasers and HIDEF scar revision techniques are introduced. 
In our office, we combine treatments starting with topical pre-conditioning of the scars with Plato's Scar Serum for hypertrophy and Melarase PM for pigmentation. Fractional RF, laser, and micro fractional RF can help limit scar growth. Kenalog IIT can also help reduce scar thickness. For lip lift scars specifically, I use selective Hyfrecation to reduce scarring. 
Best, 
Dr. Karamanoukian
Realself100 Surgeon

Based on your photos, I am not sure you need a lip lift.Are you sure your "keloid" scars are truly keloids or are they just bad scars(from poor technique)?You appear to have a facial volume issue that when addressed may enhance your lips and mouth area without external scars.Hope this helps