Maximo had some hair breakage at the inner corners of his eyes -- the hair that goes up into the topknot. His was the result of a combination of eye boogers and brittleness caused by sticky foods, yogurt and sweet peas. After he would eat, he would rub his face in his bed or on the couch.
Hair gel can also dry out the hair and cause breakage during combing.
After we switched foods and he matured a bit, his eye boogers decreased and he stopped rubbing his face. The hair is growing long again.
I think keeping the hair clean and conditioned helps stop breakage. Discourage head rubbing too.