A composition for maintaining or improving skin elasticity

[Problems] to provide compositions and formulations that contribute to maintaining resistance to the exterior by maintaining or improving skin elasticity to impart physical strength to the skin. [Solution] a composition for maintaining or improving skin elasticity is prepared which contains (a) at least one selected from the group consisting of ethyl α-D-glucosides and their analogueous compounds as an active ingredient, wherein the content of the (a) ingredient is 0.05-30 mass perent. Also provided is a α pharmaceutical composition containing (a) at least one selected from the group consisting of a transglutaminase, filaggrin, claudin, A gene expression promoter for at least one protein selected from the group consisting of EGF, sphingomyelinase, and PPAR is prepared. Selected drawing: Figure 6