The mark consists of There is an image of a large, oblong rock. Inside the rock is the outline of a general structural formula of chemical compounds in the negative space. On either side of the rock are small trees that appear to be in the background of the rock. Underneath this are the words CASTLE ROCK in thin, uppercase letters. Beneath that are the words HORMONE HEALTH in smaller, uppercase letters. All of this is on an unclaimed background.
Color is not claimed as a feature of the mark.