Thick Dark Liquid in Medicated Soap or Shampoo

This page is the CodyCross answer for the clue below from Australia, Group 1015, Puzzle 5 (Cape Byron Lighthouse).

Question is: Thick Dark Liquid in Medicated Soap or Shampoo

and the answer is: COALTAR

Word Meaning:

COAL TAR — A black, viscous tar made by the destructive distillation of coal (to make coke and town gas); it contains a great number of compounds including hydrocarbons and phenols; used in the preparation of medicinal soap and shampoo, and industrially for the manufacture of many products.

Definitions from Wiktionary.