Use your azelaic acid product once per day, either in the morning before your sunscreen or at night, before your moisturizer.

You can apply this product either during the day or at night, before your moisturizer or sunscreen. You can also apply it as a spot treatment only - as in directly on inflamed blemishes or in the area where you get clogged pores. We recommend that you use the product no more than once a week on larger areas of your face. More frequent use can result in skin irritation.

Use a generous amount of product to remove all dirt, sunscreen or makeup in one step. There is no need to double-cleanse. It is a good idea to always finish cleansing with a splash of clean water to remove any residue from the cleanser. Most people only need to cleanse their skin with a cleanser once per day, at night. It is the first step of a night skincare routine.