Someone wanted a drugstore rec? I use Johnson and Johnson's Soothing Naturals Hair and Body Wash maybe once a month/every six weeks or so. Way cheap and widely available -- baby section of walgreens, CVS, Harmon, etc. It's much gentler than your basic drugstore 'poo, but not as gentle as the no-poos.
Ingredients: Water, PEG-80 Sorbitan Laurate, Cocamidopropyl Betaine, Decyl Glucoside, Acrylates Copolymer, Di-PPG-2 Myreth-10 Adipate, Tocopherol, Tocopheryl Acetate, Olea Europaea (Olive) Leaf Extract, Aloe Barbadensis Leaf Extract, Sodium Cocoyl Amino Acids, Glycine