New, unopened, stored at home. Set of 2. Capacity: 12ml DRX HQ Brightening - Formulated to penetrate deep into the stratum corneum. - Clinical trials conducted. - Serum type, easily absorbed by the skin. - Fragrance-free, colorant-free, preservative-free. Formulation focused on stability and safety: Hydroquinone is known to be unstable and can cause irritation, but Rohto Pharmaceutical's formulation technology allows it to be incorporated in a highly stable state, and its stability has been confirmed for up to 3 years after manufacture. Regarding irritation, the formulation has been carefully designed, and clinical trials have shown that almost no irritation is felt. [Features] Fragrance-free, colorant-free, and preservative-free, making it a product that can be used with confidence even by those with sensitive skin.