PROBLEM TO BE SOLVED: To provide a novel and highly safe skin aging inhibitor.SOLUTION: The skin aging inhibitor includes immature apple extract as an active ingredient. The immature apple extract has a melanin production inhibitory effect, excellent whitening effect, anti-glycation effect, and gelatinase inhibitory effect. A highly safe skin aging inhibitor containing the immature apple extract can be obtained. By use of the skin aging inhibitor as a topical skin preparation, excellent skin aging inhibitory effects can be achieved on the skin, such as prevention and improvement of spots, dullness, wrinkles, sagging, roughness, and reduced elasticity of the skin.