Half of the cure for split ends is prevention: Don’t brush your hair too much, and be sure to use a very soft brush and combs that have smooth wide-set teeth; avoid nylon bristles. And no matter what, don’t brush wet hair! If you have knots, use a wide-toothed comb or your fingers to gently detangle from the ends up, one section at a time.
Too-tight or too-heavy weaves can cause breakage, as can elastic bands — even the covered ones — and barrettes. If you put your hair in a ponytail, use a scrunchie; when wearing barrettes, take care not to catch hair in the metal clip. And if you use curlers, be sure not to wind them too tightly.
Of course, a trim will rid you of split ends instantly. In the meantime, a split-end treatment or leave-in conditioner with light hold applied to the ends can temporarily seal the splits. Also, consider sleeping on a satin pillowcase — it will reduce friction and you’ll feel pampered.