Truthfully, the best way to treat existing split ends is to trim them off as they will work their way up the hairshaft causing the hair to become considerably weakened over time. To thereafter prevent splitting, nourish, nourish, nourish. The more hydtarted the hair is, the less it will split. Shampoo weekly using Dark and Lovely 3 in 1 shampoo with moisture seal technology. Follow with Dark and Lovely Deep Conditioner to soften and detangle the hair, and helps to prevent further splitting. Treat at least once a month with Dark and Lovely Ultra Cholesterol for deep nourishment.