Use every day, as many times as needed. For most people, it's best to use a moisturizer twice per day. In the morning, apply it before your sunscreen (or skip the moisturizer in the morning if your sunscreen feels hydrating enough). In the evening, a moisturizer is usually the last step of a routine.

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

You can use this product in the morning or at night, before your moisturizer or sunscreen. If your skin tolerates it well, you can use it twice a day.

Use this product up to two times per week, either day or night, on clean skin. Follow up with your moisturizer or sunscreen.