Dude it z true for enzymes that all enzymes are proteins not for hormònes. Hormones can b proteins or polypeptides e.g insulin, ADH etc. they can b peptides likes somatostatins,ACTH etc . They can b steroids like estrogens, progesterones. They can b amino acids like thyroxine. So it z wrong that all hormones are protein. Dude if u stil ve confusiön just insert hormones in wikipedia, i think it will have enough info to make it clear.