from
http://www.ehow.com/how_6177_prevent-split-ends.html
Here are some steps to prevent split ends, anyway.
Steps:
1. Take care not to split them in the first place, because the only cure is a trim, according to trichologists (hair doctors) everywhere.
2. Don't brush hair when it's wet, because that's when it is at its most vulnerable.
3. Cool it on the heat styling tricks. That means cut down on hair dryers, straightening irons, crimpers, curling irons and hot curlers.
4. Buy a natural-bristle brush that won't pull on hair and ultimately break it off, thereby causing a possible split end.
5. Wear a hat to minimize sun damage.
6. Use a shampoo that lists sunscreen as a major ingredient.
7. Condition after shampooing, and use a deep conditioner once a month.
8. Try a hair split repair product. It won't actually repair the hair, but it will minimize the stray hair look you hate.
9. Get a trim every six weeks.
also, this thread might help:
http://community.boredofstudies.org.../its-all-about-hair.html?highlight=split+ends
maybe you could try herbal essences 'breaks over', shampoo
http://www.herbalessences.com/us/collections/breaks_over/shampoo.jsp