I found it, the perfect brush and comb for grooming Jack's hair below his eyes where that yukky stuff is.
I have human eyebrow brush and it works great. It has a comb on one side and a brush on the other and is about 1" long. It is tiny enough to fit and no get into his eyes, and it grooms out that "yukky" stuff really well.
I swear I have spent more on his cosmetics in 6 months than I have spent on myself in a year. Oh, but it is worth it.
He goes for his first haircut tomorrow, and I am dreading it, I hope the groomer is patient.