Can I apply a steroid on my scalp to treat redness and itchiness post op?

I'm 42 days post op and for the last couple of weeks my new hairs (or areas of incisions) have been itching a lot. They also are still red-like holes from the time the incisions were made. My doctor does not think there is an infection (although he recommended antibiotics anyways). My dermatologist suggested triamcinolone lotion, which is a steroid, for the itchiness and redness. But she said to check with the HT surgeon if this would affect the grafts. Could the application of this affect the grafts?