A new action of Helipyrone A is now found. As a useful application of Helipyrone A, the following agent is disclosed: a singlet oxygen scavenger, an anti-skin-aging agent, an anti-wrinkle agent, an anti-sagging agent, an agent for improving the moisture content in the skin, a skin-whitening agent, a melanin formation inhibitor, a nitrogen monooxide scavenger or an antioxidant, each comprising Helipyrone A.
