Concealer help? non drugstore!?

..I have keratosis pilaris. Its a skin condition that leaves red bumps on your skin. I dont really have it on my face but i have alot of redness on my cheeks that is there because of the kp. I need a really good concealer that will cover the redness on my cheeks and dark circles under my eyes & wont fade by the end of the day. any suggestions? Please help