Here is a list of proteins posted on another thread.

Cocodimonium hydroxypropyl hydrolyzed casein
Cocodimonium hydroxypropyl hydrolyzed collagen
Cocodimonium hydroxypropyl hydrolyzed hair keratin
Cocodimonium hydroxypropyl hydrolyzed keratin
Cocodimonium hydroxypropyl hydrolyzed rice protein
Cocodimonium hydroxypropyl hydrolyzed silk
Cocodimonium hydroxypropyl hydrolyzed soy protein
Cocodimonium hydroxypropyl hydrolyzed wheat protein
Cocodimonium hydroxypropyl silk amino acids
Cocoyl hydrolyzed collagen
Cocoyl hydrolyzed keratin
Hydrolyzed keratin
Hydrolyzed oat flour
Hydrolyzed silk
Hydrolyzed silk protein
Hydrolyzed soy protein
Hydrolyzed wheat protein
Hydrolyzed wheat protein
Keratin
Potassium cocoyl hydrolyzed collagen
TEA-cocoyl hydrolyzed collagen
TEA-cocoyl hydrolyzed soy protein


As you can see, most of them say protein or hydrolyzed, which indicates protein. Scientifically, if I recall from Biology class, proteins tend to have an "in" or "en" ending (protein, keratin, cassein, collagen).
~belasuna
3a/b, very dry, fine/med-coarse, high porosity
CG since 7/27/09
Bella Curl Products
CW: protein free-cleansing creme
CO: protein free MRcondish
Styler: FSG + protein free LI Elixir, Gellie, Shine & Seal Serum
Lady of Elixir, Keeper of the Secret Blend, in the Order of the Curly Crusaders