Dryness, split ends and friction all contribute to knotty hair. Keep your hair well-moisturized to help prevent tangles from starting.
Cut out split ends as you see them as they can easily create tangles. Make sure you are using gentle hair care techniques to keep your hair free of damage.
To avoid friction, try sleeping on a satin pillowcase at night.
Tangles also frequently occur while washing hair. Never pile your hair atop your head and scrub. Shampoo your scalp only and then rinse all of the shampoo out.
Then comb the conditioner through your hair with a wide-toothed comb, and continue combing as you rinse out. This way your hair should not require further detangling before it dries. Don't rub your hair dry, let your hair dry naturally, loose wrapped.
Here are links to our moisturizers and detanglers that will help-