Your symptoms likely be due to increased exposure to sunlight. But you must also consider that there are several skin diseases which can pigmentation on the face. Also the use of steroid creams also can cause pigmentation over the face. Hence it best you consult a dermatologist. For now use a sunscreen like suncote gel morning and afternoon. And a face wash like ahaglow-s or spongysal face wash for oily skin. Wash your face regularly at least 2-3 times per day...Treatment to dry skin includes hydrate yourself well drink plenty of fluids, avoid using harsh soaps, ‌use cleansing lotions for face n mild soap for body , use moisturizer after showers...Mild to moderate dark circles often respond well to simple and inexpensive treatments, such as: Cold. Try a cold compress, two chilled teaspoons or a bag of frozen peas wrapped in a soft cloth to temporarily reduce dilated and discolored under-eye blood vessels...Consult dermatologist and discuss the issues they will do the needful.