Pollution, tobacco, stress, tiredness, lack of hydration, lack of exercise... Dull skin has many causes. To remedy the situation, you need to start drinking plenty of water for hydration. You can increase the radiance effect by drinking a glass of room temperature water with the juice of a lemon squeezed in as soon as you get up in the morning. Try massaging your skin with circular movements to boost the microcirculation. And if you have dark shadows under your eyes ; caused by lack of sleep ; try putting cold tea bags on top of them for 5 minutes before applying an eye cream to reduce puffiness.