The Intensive Vitamin C serum stands out as the debut product featuring two distinct forms of vitamin C for both immediate and enduring effects. The immediate impact is evident as results manifest quickly, while the long-term benefits ensure that the serum's effectiveness lingers on the skin. This dual-action is attributed to the combination of pure vitamin C (10%) alongside provitamin C (2%). The perks of pure vitamin C (ascorbic acid) include its ability to brighten the complexion, provide antioxidant protection, and regulate pigmentation, all vital for maintaining the skin's beauty and youthfulness. On the other hand, provitamin C (ascorbyl glucoside) boasts remarkable stability, facilitating the gradual infusion of vitamin C into the epidermis. The formulation of the Intensive Vitamin C² Double Concentré serum is entirely fresh and pure, safeguarded until its first application—a result of its innovative double-compartment packaging that ensures optimal preservation of pure vitamin C.