Azelaic acid is used to treat mild to moderate acne, both comedonal acne and inflammatory acne.   It belongs to a class of medication called dicarboxylic acids . It works by killing acne bacteria that infect skin pores. It also decreases the production of keratin, which is a natural substance that promotes the growth of acne bacteria.  Azelaic acid is also used as a topical gel treatment for rosacea , due to its ability to reduce inflammation.  It clears the bumps and swelling caused by Rosacea. The mechanism of action is thought to be through the inhibition of hyperactive protease activity that converts cathelicidin into the antimicrobial skin peptide LL-37.  Azelaic acid has been used for treatment of skin pigmentation including melasma and post-inflammatory hyperpigmentation , particularly in those with darker skin types. It has been recommended as an alternative to hydroquinone (HQ).  As a tyrosinase inhibitor, azelaic acid reduces synthesis of melanin . 
Well before this, Australia had been well advanced in meeting the measures agreed upon under the Convention. Production, import and use of aldrin, chlordane , DDT, dieldrin, hexachlorobenzene (HCB), heptachlor , endrin, and toxaphene are not permitted in Australia. Production and importation of polychlorinated biphenyls (PCBs) are not permitted in Australia, with the phase-out of existing PCBs being managed under the National Strategy for the Management of Scheduled Waste. This strategy also addresses how Australia will manage HCB waste and organochlorine pesticides.