When should I use Vitamin C serum to maximize its benefits for my skin? Is there a particular time of day that yields superior results, or does it depend on my unique skin type and its needs? What about the application in relation to other skincare products—should I layer it underneath my moisturizer or apply it before my sunscreen? Furthermore, is it essential to consider the season or climate, as these factors might influence how Vitamin C serum interacts with my skin? Should I be cautious about using it in conjunction with other active ingredients, such as retinol or exfoliants, to avoid irritation? Even more intriguing is the question of whether the quality and concentration of Vitamin C in the serum affects the timing of its application. How can I ensure that I’m using this powerful antioxidant in the most effective manner possible to promote a radiant and youthful complexion?