Split hair can only be treated by cutting the damaged hair, and it results from not moisturizing the ends of the hair.
To avoid breakage. Heat from one to two tablespoons of sweet almond oil or a coconut oil and apply it to the ends of the hair and the rest of the hair and scalp. Cover your hair with a towel and let it absorb the oil overnight. And in the morning wash your hair. It can be repeated once a week.