Hello. Thanks for writing to us at healthcaremagic You seem to have a condition known as Melasma. Melasma presents as hyperpigmentation commonly over the cheek bones/malar area; other areas like nose, forehead, upper lips may also be involved. It is idiopathic in most of the cases. However, there are a few well known causes of melasma such as oral contraceptive pills, pregnancy and NSAIDs. Sunscreen is an essential part in the management of any facial hyperpigmentation including melasma. I would suggest you to use a broad spectrum sunscreen, throughout the day. Reapply every 2-3 hours. It should have both UV A as well as UV B coverage. A broad spectrum sunscreen that has a minimum spf of 30, would be suitable. You may find one such sunscreen OTC from a drug store Or you may also get it prescribed from a dermatologist. At night you may use a pigment lightening cream, containing one or more of the following active ingredients e.g Tretinoin, Mometasone, Azaleic acid, Hydroquinone, Kojic acid, Arbutin, Glycolic acid, licorice extract, Niacinamide, Vit C etc. Along with the creams, you may also opt for a few sessions of chemical peeling from your dermatologist. Melasma may take time to respond and you have to be patient with the treatment and follow up regularly with a dermatologist. Your dermatologist might change or modify treatment according to the response. Regards