If your skin is looking dull, you might be wondering what’s causing it and how you can create a healthy, vibrant glow. Some of the most common causes for dull-looking skin are lack of moisturizer, so you can use a moisturizer mask that can help hydrate your skin and protect the delicate top layer; dryness, what can quickly take on the appearance of being dull and lifeless; aging, for what you can adopt a skin care routine that helps provide your skin with the nourishment and hydration it needs to stay healthy and vibrant.