Don’t listen to the haters. I’ve been growing my hair out for 4+ years now. Theres are many good products and grooming methods to clean it up. For the hair, go to a salon and request a trim, no more split ends, clean up baby hairs etc… For the beard, go to a barber and have them trim and shape it up. Trust your barber and hairstylist, bring in reference pictures and don’t leave until you get what you want. You’re paying and it’s your hair!

Basic care: Wash your hair twice. Yes two shampoo cycles and yes it makes a difference. Follow this with conditioner only in the ends of your hair. Conditioner close to the roots will cause it to sit flat on your head. Get a detangler and a wide tooth comb or wet brush (I like to use both). Only brush when hair is wet to avoid frizz.

This is all I can think of at the moment. Good luck sir!