I have keratosis pilarisis, diagnosed by a dermatologist. Affects my eyebrow growth, and thats what I'm concerned about. (photo)

Keratosis pilaris occurs on my jawline, & upper arms. I have products that treat these well. What bothers me is the lack of hair in eyebrow region, particularly the outer third, where there is almost no hair. There were "chicken skin" dots there but they're mostly gone, presumably due to retinol use, but I'm still lacking in eyebrow hair. I'm also allergic to sulfonamide antibiotics (caused a rash) so I believe anything sulphur based is out. Thank you very much.