Azelaic acid is a naturally occurring saturated 9-carbon dicarboxylic acid produced by the yeast Malassezia furfur. In modern dermatology, it is one of the most versatile and well-tolerated topical therapies available, uniquely indicated for both acne vulgaris and rosacea.
Triple Mechanism of Action
- Direct Anti-Microbial Action: Inhibits bacterial protein synthesis in both Cutibacterium acnes and Staphylococcus epidermidis without promoting antibiotic resistance.
- Selective Keratolytic & Anti-Comedogenic Activity: Decreases the synthesis of filaggrin and precursor keratins, reducing the cohesion of corneocytes in the infundibular canal.
- Tyrosinase Inhibition: Specifically inhibits abnormal, hyperactive melanocytes by acting as a competitive inhibitor of tyrosinase, making it exceptionally effective for resolving melasma and PIH.
Safety in Pregnancy & Sensitive Skin
Unlike retinoids and high-dose salicylic acid, azelaic acid is designated as an FDA Category B topical agent with a stellar safety profile, making it the preferred first-line intervention for managing pregnancy-related hormonal acne and post-inflammatory erythema.