Why some people look much younger than their years? Or why people in the same age with different lifestyle have different fase of ageing? Like we know the ageing can see directly from the condition of the skin. Like wrinkle, black spot, or etc.
There are two factor that work in the process of ageing. Outside factor and inside factor. Outside factor like sun burn, smoking and poor diet. Inside factor is like the changing in hormone levels and perhaps the genetic.
Skin ageing is not just about oxygen depletion, free radical damage, collagen destruction, less collagen, less cell turnover, abnormal cell formation, or hormone loss--but it is a combination of all these and more.
There are changes that generally occur in the skin's cell as the ageing process takes hold. Slowing cell metabolism creates a lack of sodium oxidase dimutase, catalase and glutathione perioxidase --the vital fuel used by the skin for normal functions. The productions of anti-oxidants decrease naturally, leading to lines and wrinkles. The slowdown productions of collagen in the dermis and reduction of lipid synthesis in epidermis will weaken the skin's natural barrier and the skin loses its hydration.
That's why people grow older and older by the increase of their age. But good diet and lifestyle will slowdown the process of ageing.
