How often should I use azelaic acid to reap its benefits for my skin? Could it be that the frequency of application significantly influences its efficacy, ensuring that I achieve the desired results without encountering potential side effects? Is there perhaps an optimal routine I should follow that maximizes absorption while allowing my skin to acclimate to this potent ingredient? Moreover, might the ideal frequency vary based on individual skin types, concerns, or conditions? For instance, if my skin is particularly sensitive or reactive, should I adopt a more cautious approach, incorporating azelaic acid gradually into my regimen? Conversely, if my skin is robust and accustomed to exfoliants, could I utilize this remarkable compound more liberally? What insights can seasoned dermatologists or skincare aficionados offer about tailoring an azelaic acid routine for optimal results? Are there specific indicators I should watch for that signal when to adjust my usage? These questions linger, inviting further exploration.