Hi... My Skin Is Sensitive.. Now Am 26 Years Old...

hi... my skin is sensitive.. now am 26 years old... i got 2 kids.. my face and my neck are looking dark but not my body color.. after delivery i had this pblm before not.. my hemoglobin level is also low.. some docters told its is a blood circulation pblm.. now even i stpped my breast feeding.. help me docter.. how can i get my glowing skin on my face and neck...plz