Provided is a composition for accelerating the penetration through the skin, which can dramatically improve the penetration of a medicine through the skin without requiring the shaping of the medicine in a particulate structure or the like and without causing the damage of dermal tissues. Also provided are a preparation for transdermal administration and a skin patch preparation, each of which contains the composition for accelerating the penetration through the skin. A composition for accelerating the penetration through the skin, which contains a flavonoid compound and can be used for accelerating the penetration of a medicine through the skin.
