Efficacy: Add refined ratio of niacinamide, tranexamic acid, undecylenoyl phenylalanine to brighten the skin of the hands. The moisturizing formula helps to improve skin problems such as dryness, dullness , and makes the hands soft and delicate after long-term use. Instructions: Take an appropriate amount of this product and apply it to the skin of the hand, massage gently until absorbed. Precautions: If it gets into the eyes, please wash it with plenty of water immediately; if you feel uncomfortable, please stop using it immediately; please keep it out of reach of infants and young children.