正常人颈纹的产生一般来说有两个原因:一个是表皮细胞衰老,变得没有活力,细胞代谢不旺,水分减少,胞体塌陷;另一个是结缔组织的萎缩,其中最重要的就是胶原蛋白减少。胶原蛋白起到非常重要的填充、联结作用,有很强的弹性,它撑在皮肤下面,皮肤就变得柔软有弹性、饱满滋润。如果胶原蛋白减少的话,颈纹就容易产生。 There are two common reasons for the normal appearance of neck veins: one is the aging of the epidermal cells, becomes vitality, cell metabolism is not flourishing, water reduction, cell collapse; the other is the contraction of connective tissue, the most important of which is collagen Protein reduction. Collagen plays a very important role in filling and bonding. It has a strong elasticity. When it stays under the skin, the skin becomes soft, elastic and full of moisture. If the collagen is reduced, the neckline is easy to produce.