If I recall correctly, the majority of the complaints about Burt's Bees shampoos being rough on hair was before they revamped their entire line. The list for Very Volumizing Pomegranate Shampoo Laura posted has only 3.
Very Volumizing Pomegranate Shampoo
aqua (water, eau), sodium bis-hydroxyethylglycinate coco-glucosides crosspolymer, sodium cocoyl alaninate, glycerin, disodium cocoyl glutamate, oryza sativa (rice) extract, hydrolyzed jojoba proteinsodium cocoyl hydrolyzed soy protein, punica granatum seed oil, origanum vulgare leaf oil, thymus vulgaris (thyme) oil, arginine, parfum (fragrance), sodium lauroyl lactylate, sodium cocoyl glutamate guar hydroxypropyltrimonium chloride, lauryl lactyl lactate, sodium chloride, lactic acid, sodium polyaspartate, leuconostoc ferment filtrate, xanthan gum, ascorbic acid, citric acid, potassium sorbate.
Some pages with info:
Poly Suga®Betaine C / Sodium Bis-Hydroxyethylglycinate Coco-Glucosides Crosspolymer (sodium bis-hydroxyethylglycinate coco-glucosides crosspolymer)
sodium cocoyl glutamate - Cosmetic Ingredient Dictionary: Cosmetics Cop Expert Advice
Sodium Cocoyl Alaninate - Buy Sodium Cocoyl Alaninate,Alanine,Cocoyl Alaninate Product on Alibaba.com
DISODIUM COCOYL GLUTAMATE || Skin Deep® Cosmetics Database | Environmental Working Group
Chemical of the Day - Q&A - Sodium Cocoyl Glutamate &*MSM - "There has only been one published study done on the ingredient. They found that a blend of Sodium Laureth Sulfate and Sodium Cocoyl Glutamate was more gentle on skin than a blend of Sodium Laureth Sulfate and Coco Betaine."
This, on the other hand, is their old Super Shiny Grapefruit & Sugar Beet Shampoo's ingredients (containing 6 "gentle" surfactants): water, decyl glucoside, lauryl glucoside, coco-glucoside, glyceryl oleate, glycine soja (soybean) protein, coco-betaine, honey, sucrose laurate, betaine, glycerin, hydroxypropyltrimonium honey, glucose, citrus grandis (grapefruit) seed extract, citrus aurantium dulcis (orange) peel oil, citrus medica limonum (lemon) peel oil, citrus tangerina (tangerine) peel oil, citrus aurantifolia (lime) oil, zingiber officinale (ginger) root extract, citrus reticulata (tangerine/petitgrain) leaf oil, xanthan gum, glucose oxidase, lactoperoxidase
The sucrose laurate is also a foam booster and emulsifier. Anyway, with only 3 surfactants in the newer shampoo formulas, they might be worth trying.