Dull skin is linked to slowed down cell renewal and a reduction in collagen; the skin no longer reflects the light and loses its natural glow. But identifying the causes of dull skin is like looking for a needle in a haystack. Firstly, because there is no predisposition to greyish skin. All epidermises can be affected. Then, because there are so many reasons behind it: pollution, smoking, dehydration, stress, fatigue, rich foods, UV, hormone changes, lack of exercise, etc. Instead of combatting each of these factors separately, appropriate skin care and some well chosen makeup will bring some glow back to our skin.