Do it as often as you feel like your hair needs it. I suggest using a very light conditioner for co-washing, followed by a deep conditioner. You will have to do some experimenting! Good luck!
-3A, fine, very thick, normal por., normal elast., long, dye- free (CG since Nov. '11)
-Low poo (As needed): CVS Argan Oil Renewing Shampoo
-RO: GVP The Detangler
-Styling: LALSG
-PT: ION Effective Care (seldom)
*I have learned that sometimes less is more when it comes to my hair*