To provide a collagen synthesis promoter and an external preparation for the skin which contain extracts from Ganoderma and ginseng.

A mixture of extracts from Ganoderma and ginseng is superior to the extract of Ganoderma lucidum or ginseng alone in a collagen synthesis-enhancing effect. The external preparation for the skin containing these extracts is safe and highly effective in improving wrinkles and sagging. The Ganoderma used here belongs to genus Ganoderma of family Ganodermataceae and includes Ganoderma lucidum, G. japonicum, G. sinense, G. atrum, G. neo-japonicum, etc. The ginsen belongs to family Araliaceae and includes Panax ginseng, P. notoginseng, P. quinquefolium, Acanthopanax sieboldianus, etc.