What should I do for a stubborn facelift keloid scar?

Keloid treatment should initially be conservative but should focus
on definitive treatments and a goal of recurrence reduction. 
In these patients, I have focused on a multidisciplinary course of
treatment including topical treatments, silicone sheeting, aggressive
TAC injections, and surgery. This protocol should only be performed with
physicians or surgeons who are experienced in aggressive keloid
management for resistant scars. I also reserve such treatment for
keloids in the proliferative phase of growth.
A consultation is always a great first step; followed by application of Plato's Scar Serum before laser and injection. 
Best, 
Dr. Karamanoukian
Realself100 Surgeon

A picture would be very helpful.  The reason would be that one could possible distinguish the scar as a keloid or hypertrophic scar.  A keloid is a raised scar that typically does not spread (not wide) vs a hypertrophic scar that is wider than the original incision.  Hypertrophic scars are a result of increased tension on the skin at closure of a facelift.  This may be treated by removal of the area  and closure of the skin without tension.  Sometimes hair may be loss in these areas and hair transplants could help camoflauge the scar.  If this truly a keloid then they are very difficult to treat with a high recurrence rate.  Traditional methods include steroid injection, removal, and silicone sheeting.  Send pictures and/or seek consultations from a couple of BC PS.

Dr. ES

Keloid scarring after a facelift is very rare and it sounds like you have tried all the conventional treatments. One must be very cautious with further treatment, as there is a risk of making things worse. If you are having a second attempt at excision, usually we will inject steroids into the wound at the time and then every month for the next 4-6 months to try and prevent recurrence.