What Are Effective And Economical Treatments For Melasma, Seborrheic Dermatitis, And Fibromyalgia?

Kindly suggest what can be done for melasma on checks and also a daily base cream for anti-aging as my age is 42 and weight is 63.7 kg and height is 147cm. Also Iam a patient of fibromyalgia and on fluoxitine tablets for the same since last 7 months. Also suffering from sebhorric dermatitis. Using estemo, keraboast, depiwite cream, KLM vit c 20 % serum, yugard cream , renociea shampoo suggested by a dermatologist. Also I have Hba1c as 6.4. Kindly suggest a good treatment which is not very harsh and economical