The first cause for dull skin is long time exposure to sunrays with out any sun-block. As we grow aged, our skin eventually will change due to repeated mitotic cell divisions resulting wrinkles and dullness on face and hands. Some people can have dark skin tone quicker as compared to others.
Some of the causes of dark spots or skin tanning stated above are:
It reduces the blood flow carrying oxygen and other nutrients to your skin. This badly affects the skin condition and natural healing ability. As per Chinese traditional acupuncturists lungs and skin are inter dependent and mal functioning of any of the two organs will definitely affect the other adversely. For healthy skin especially quit smoking now and for general health too you must quit smoking.
- The sunrays
The UV waves in sunlight damage the skin causing dark complexion, wrinkles and sun spots. Some people have clearly different covered and exposed skin tones. Exposed skin for long time to the sun always has darker tone proving that sunrays definitely have darkening effect on skin.
How should your skin look like is determined by heredity as the matter of fact. Maternal and paternal genes inherited before birth decides your skin tone and complexion. There are methods that can make skin look healthy and fresh and even whitened.
- Food and Stress
Low intake of water, fruit and vegetables has an affect on skin as they provide all required nutritional constituents to the skin. Moreover, stress has a negative impact on the skin, when accompanied by lots of facial muscle movements.