A pair of scissors. Just kidding. Damaged is hair is prone to breakage, so start at the possible root of what is causing the damage. Damaged hair will always have breakage, but it can be minimized. Try one or all of these things: 1. Lay off styling tools that use heat: hairdryers, curling irons, straighteners. Let hair dry naturally or try setting curls with plain curlers and the cool setting of your hairdryer. 2. Avoid styling products with alcohol. Alcohol dries hair out and causes it to subsequently break. 3. Change your brush. This is a simple, but extremely effective way to prevent breakage. Plastic/synthetic bristles tend to "tear" hair, this is especially true when the hair is wet. Comb wet hair out gently using a wide tooth comb specifically made for that purpose. Switch to a boar bristle brush such as a Mason Pearson. Expensive, but so worth it. 4. Condition hair regularly. Use a deep conditioning treatment at least once every 7-10 days. This will help add elasticity and thus makes hair less prone to breakage. 5. Try a protein treatment that strengthens hair. The Redken Extreme line is fabulous and it really does work. In particular, the Deep Fuel treatment. About $14 for 5 treatments. Dirt cheap for awesome results. I love this stuff. Hope this helps.

I had alot of problems w/hair breakage,aside from a treatment, I like to use NEXUS leave in conditioners.It works really well.

have a hot oil treatment atleast twice a month... there are lots of commercially prepared do-it-yourself hot oil products that are available in the market.for cheaper alternatives, you can also use a mayonnaise and coconut oil.just apply it to your hair and wrap it with a shower cap/plastic wrap. leave it for about 30 minutes or longer (can be over night if you want. and rinse thoroughly. hope this could help!

I've read that virgin coconut oil is an excellent deep conditioner. http://www.candida-cure-recipes.com/coconut-oil-for-hair.html http://www.coconut-connections.com/hair.htm I've ordered a bottle from IHerb.com for $10. Will let you know how it works!