To provide an antioxidant, an anti-ageing agent, an anti-inflammatory agent, a hair-growing agent, an anti-obesity agent, and an ET-1mRNA expression increase-inhibiting agent, and a cosmetic and a food and drink for beauty.

The antioxidant, the anti-ageing agent, the anti-inflammatory agent, the hair-growing agent, the anti-obesity agent, or the ET-1mRNA expression increase-inhibiting agent, having at least one of a superoxide-eliminating action, a radical-eliminating action, a glutathione production-promoting action, an esterase activity-inhibiting action, a MMP-1 activity-inhibiting action, a MMP-14 activity-inhibiting action, an epidermis fibroblast growth-promoting action, an estrogen-like action, a hexosaminidase release-inhibiting action, a NO production-inhibiting action, a TNF- production-inhibiting action, a hyaluronidase activity-inhibiting action, a blood platelet aggregation inhibiting action, a hair papillary cell growth-promoting action, a testosterone 5-reductase activity-inhibiting action, an androgen receptor antagonistic action, a cAMP-phosphodiesterase activity-inhibiting action, and an ET-1mRNA expression increase-inhibiting action is characterized by containing an extract of Prunus lannesiana.