Skin that has lost its natural radiance, luminosity and glow is identified as dull skin. The triggering factors could be advancing age, skin dryness, damaged skin cells or a very slow skin cell turnover. Our skin looks dull when there is a built-up of dead skin cells on its surface. These piles of dead cells cause uneven, dull and rough patches on our skin making it look lifeless and dull. Our skin could look dull due to dryness; lack of moisture. Regular exfoliation and hydration, both from the inside and outside are the most effective ways to brighten up dull skin.