New Moon, Full Moon and Haircutting
A: In order to keep your hair healthy and growing as long as possible, you need to keep the ends trimmed of split ends and damage. That doesn’t mean that you MUST cut off “X-amount” of hair every “Y-number” of weeks. It simply means that you should examine the hair regularly and take action to correct problems as they begin to become apparent.
Since the moon is “new” or “full” every four weeks, then the hair would be cut once a month. Traditionally, the entire family (or at least all the men) would get haircuts on the same day for the sake of expedience.
Today, since haircuts (even trims) are much more costly and salon visits often require scheduling, the 6-8 week time frame comes into play as a means of keeping customers aware of the need to come back to the salon, without seeming to be simply trying to get as much money as possible from the client.
The bottom line is that you need to look at matters from an intensely personal perspective. If your hair is prone to split ends, you need to have it trimmed and treated more frequently than someone whose hair is healthy and smooth from the root to tip. If cost is a consideration, share that with your stylist. I’m sure he or she will be willing to try and work out a schedule with you that will help you achieve your goals.
©Hairfinder.com
See also:
Hair myths
Why and how to trim long hair
What split ends look like
How often should I get my hair cut?