容颜枯皱，体态瘦疲；头若蓬霜，肤如冻梨。以上四句，可谓对于典型老媪姿态的唯妙写照。但从真正科学角度探讨老化的界定还真不是三言两语可以说得清的。曾有人对一位标准美女的老化现象研究发现，其容貌的改变只不过为皮肤胶原的老化，而这种胶原组成的改变是不可用其他... Facial wrinkles, body lean tired; if a frost, skin, such as frozen pear. The above four sentences can be described as the most vivid portrayal of the typical old man gesture. However, the definition of aging from a real scientific point of view is really not a few words can be said clearly. A study on the aging phenomenon of a standard beauty once found that the appearance change is only the aging of the skin collagen, and the change of the collagen composition is not available ...