We've been using air fryer for the last few days since we need to replace our gas stove oven. Air fryer does have its perks, I was even able to bake pancake/muffin :D but in terms of regular dishes, I do miss cooking on a stove. Sometimes the taste is different too :/
Dr Leo Kah Woon at Mount E offers laser treatments for pigmentation problems. You may want to consult with him if he also has procedures specifically for melasma. Good luck to you!