NCIt definition : A naturally occurring dicarboxylic acid produced by Malassezia furfur and found in
whole grain cereals, rye, barley and animal products. Azelaic acid possesses antibacterial,
keratolytic, comedolytic, and anti-oxidant activity. Azelaic acid is bactericidal
against Proprionibacterium acnes and Staphylococcus epidermidis due to its inhibitory
effect on the synthesis of microbial cellular proteins. Azelaic acid exerts its keratolytic
and comedolytic effects by reducing the thickness of the stratum corneum and decreasing
the number of keratohyalin granules by reducing the amount and distribution of filaggrin
in epidermal layers. Azelaic acid also possesses a direct anti-inflammatory effect
due to its scavenger activity of free oxygen radical. This drug is used topically
to reduce inflammation associated with acne and rosacea.;