Frederic Fekkai stylist Adir Abergel, who works with Jessica Biel, Camilla Belle and Jennifer Garner, says frequent trips to the salon is one of the first steps to healthy hair. "Getting regular trims and cutting off any dead ends will keep hair looking fresh," he says. Six to eight weeks is the recommended time between visits. However, you may need to trim more often if you create additional stress on the hair by frequent swimming or coloring.
(source:lifestyle.msn.com.com)
I think there's a lot of way to get shiny and healthy hair :)