To prevent split ends from happening to your lengthy locks, Carter T. Lund of A Carter T. Lund Salon in Austin, Texas suggests working with your hairstylist to ensure proper conditioning at all times. He says to keep hair well moisturized and to be open to recommendations for protein treatments after any chemical work, such as color or texture services.
If at any point you see split ends start to form, have them cut off above the highest split point, otherwise the hair will continue to split. Since there really is no other cure for the dreaded split ends, always keep your ends neatly trimmed, even if you are trying to grow your hair out. Allowing hair to grow out while having split ends is simply counterproductive.