Based on the reviews, the Azelaic Acid 15 Intense Calming Serum by Anua appears to help reduce skin troubles over time for many users. Several reviewers mentioned improvements in redness, oiliness, and blemishes after consistent use. For instance, one user noted that their existing blemishes significantly subsided and new ones quickly shrank after using the product for five days.Review+ Another user reported a noticeable reduction in redness and improved skin texture after using it as part of their nighttime routine.Review+ However, it's important to note that individual results may vary, and some users with very sensitive skin may experience tingling or redness initially.