Hi Whitney! Thanks for your interest in our products. We generally recommend applying an "active" treatment product like Active Serum at night while skin naturally renews. Our advanced Vitamin C products can be applied in the morning or night - depending on your current regimen. Our cleansers can be applied in the morning or night. We do always recommend spot testing and consulting with your skincare professional for a complete regimen and product recommendation based on your individual skincare needs.

Hi there! Thanks for reaching out. In this case, we recommend connecting with your skincare professional to receive the most accurate guidance possible, taking into consideration your unique skin profile and health history. In the United States, you can find the nearest iS Clinical professional to you by using the “Find A Professional” tool on our website: isclinical.com/find-a-professional Any local dermatologist will also be able to offer guidance best suited to your individual needs.