The present invention provides a method for enhancing epidermal permeability barrier function of the aged skin, which includes the step of externally administering to the aged skin an amount of a fumaric acid diester derivative expressed by the following general formula (1) as an active ingredient
wherein R
1
represents a C
1-4
alkylene group; R
2
and R
3
each represents a linear or branched C
1-8
alkyl group; and n is an integer of 2 to 5.
本发明提供了一种增强老化皮肤表皮渗透屏障功能的方法,该方法包括以下步骤:向老化皮肤外部施用一定量的
富马酸二酯衍
生物作为活性成分,该衍
生物的表达式如下通式(1)
其中 R
1
代表 C
1-4
烯基; R
2
和 R
3
各自代表线性或支链 C
1-8
烷基;n 为 2 至 5 的整数。