Hello dear. This is tricky. With no clear picture of the skin it is difficult to suggest. But you can try the following simple measures.
Next Steps
Drink 4-5 litres of water every day. Squeeze one lemon in each litre of water. Use a medicated sunscreen such as Ansolar atleast twice daily. Wash face with Cetaphil cleanser. Last but not least, sleep atleast 8 hours a day, undisturbed