As you can see below, both have water, alcohol, nonoxynol-10, amodimethicone, panthenol, tallowtrimonium Chloride, Linoleamidopropyl Ethyl, Polysorbate 60, Dimethyl Lauramine Isostearate, and Alanine/Histidine/Lysine Polypeptide Copper HCI.
However, ac has the copper peptide listed as the third ingredient after water and alcohol; whereas tricomin has it listed as the twelth ingredient.
Ingredients for Tricomin:
Purified Water, SD Alcohol 40B, Amodimethicone, Nonoxynol-10, Panthenol, Polyquaternium-11, Polysorbate 60, Tallowtrimonium Chloride, Citric Acid, Dimethyl Lauramine Isostearate, Linoleamidopropyl Ethyl Trimonium Ethosulfate, Alanine/Histidine/Lysine Polypeptide Copper HCI, Methylparaben, Benzalkonium Chloride, Menthol, FD&C Blue #1.
Ingredients for American Crew:
Solution: Water, Alcohol Denat., Alanine/Histidine/Lysine Polypeptide Copper HCL, Quaternium 23, Amodimethicone, Nonoxynol-10, Tallowtrimonium Chloride, Dimethyl Lauramine Isostearate, Linoleamidopropyl Ethyldimonium Ethosulfate, Benzethonium Chloride, Panthenol (Provitamin B5 Source), Polysorbate 60, Camelia Sinensis Leaf Extract (Green Tea Source), Serenoa Serrulata Fruit Extract (Palmetto Fruit Extract Source), Citric Acid (Molasses Source), Disodium EDTA, Fragrance, Methylparaben, Ethylparaben, Phenoxyethanol, Blue 1 (Cl 42090).