I am a 27-year-old female. I have had dark spots and melasma (pigmentation) on my face for a long time. The pigmentation is mainly on my cheeks and it has become quite dark. My skin is dry and sensitive. I have already tried Vitamin C serum, sunscreen, moisturizer, and Azelaic Acid, but I have not seen much improvement. Can I use Skinshine Cream or is there a safer and better alternative? Is Azelaic Acid 20% (Aziderm) enough, or should I use another treatment? Please suggest a proper skincare routine and medicines for long-term improvement. Thank you.