Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. As per your case history your daughter is having post-inflammatory hyperpigmentation. My treatment advice is - 1. Avoid sun exposure and use a good sunscreen lotion with spf more than 30. 2. Apply a mild topical steroid cream like Mometasone cream on the lesions. 3. Take a vitamin C supplement. Hope I have answered your query. Let me know if I can assist you further.