Yes, you can. The Derma Co Azelaic Acid is designed to be used once daily, preferably at night. Apply an even layer of this spot corrector gel on the affected areas and let it work overnight. It is crafted with Kojic Acid, Azelaic Acid, and Tranexamic Acid that seeps into the skin quickly to treat dark spots and uneven skin texture, giving you brighter and healthier-looking skin.