The decision of administering azelaic acid during daylight or evening hours depends on several factors related to individual skin type, the specific formulation of the product, and concurrent skincare routines. This choice impacts the efficacy and tolerability of the treatment.
Optimal timing can maximize the benefits of azelaic acid, such as reducing inflammation, clearing blemishes, and evening skin tone. Historically, recommendations have varied, often based on anecdotal evidence and individual practitioner preferences. Newer research continues to refine these guidelines.