I found the ingredients for the deep conditioner I doubt it's much different from the Cowash:
Water, Stearyl Alcohol, Behentrimonium Methosulfate, Cetyl Alcohol, Bis Aminopropyl Dimethicone, Fragrance, Benzyl Alcohol, Disodium ETDA, Pathenol, Panthenyl Ethyl Ether, Jojoba Seed Oil, Coconut Oil, Methylchloroisothaizolinone, Methylisothaizolinone

I went on Pantenes website and I'm sure they have silicones the "truly natural" shampoo is a clarifying shampoo