8 glasses of water a day keep my skin moist?

Does drinking 8 glasses of water a day keep my skin moist? 每天真得需要喝8杯水吗？

No. Despite years of having this drummed into our heads, this is not true. It is good to keep your body, including your skin, hydrated, however the outermost layer of skin does not absorb water since it is made up of dead skin cells. Moisture level of skin is not determined by internal factors, but rather external ones, such 

as cold or hot air, dry heat and by the number of oil-producing glands you have.

许多书上都会建议：每天至少喝7到8杯水便能防止干燥，拥有水嫩的肌肤。真的是这样吗?但事实上我们通常会发现，虽然已经将这条美容法则贯彻到底了，但仍然得面对皮肤干燥的问题。
虽然喝水是养生之道中十分重要的一条，但却并不意味着它可以完全解决所有的问题，要想和干燥的肌肤做斗争，还有许多功课要做。喝水只能滋润我们的身体和皮肤内层，但是皮肤的外层受到外在的影响导致干燥，死皮的组成，是很难吸收我们喝下的水。肌肤的滋润度是外在的影响而导致成的，例如冲热或冷水澡，干燥的天气，脸上油脂分泌都会影响我们肌肤。