For years products have boasted about their ability to fuse split ends. But now science has finally caught up to make this hair hype a reality. explains just how this new technology works as well as offers other tried-and-true split-end treatments.

Real reconstructors. Although some products are marketed as split-end antidotes, many are really just conditioners that smooth out the hair’s cuticle layer to prevent more damage. These products don’t actually repair the damage already done. Now, a new line of products based on chemical compounds called polyelectrolyte complexes (PEC) is available. Studies show they reconstruct damaged hair by binding the protein molecules in split ends together. After you use a PEC product, then use a blow-drier set on “warm” to pull split ends together and strengthen the bonds. (Click here for more information on specific PEC products.)

Traditional methods. Perhaps the most dependable way to prevent split ends is to snip off the ends of hair strands often—about every eight weeks. Strands split vertically when the protective outer layer of your hair cuticle is stripped away. What can cause this hair disaster? A number of things: heat, excessive brushing or manipulating, elastic bands, dry scalp, hair extensions or towel drying. All can make your hair look frizzy and do some major damage. Also remember that if you don’t cut off the entire split end, it reappears. Usually trimming hair one quarter inch will do the trick. What’s more, try to keep tresses moisturized, and experiment with protective hairstyles that limit the friction and wear and tear your tresses take.

Prefer to address split ends the old-fashioned way? Click here to learn about natural oils that can help you prevent these hair destroyers.