An oil-based composition for application to mucosal surfaces of the human body provides potent activators of cytoprotective antioxidants. The composition includes the following ingredients: soy oil; coconut oil; orange oil; peppermint oil; aloe vera oil; vitamin E; and may further include jojoba and a preservative. Application of the composition increases expression of antioxidant genes and inhibits proinflammatory action caused by exposure to oxidant pollutants, allergens and other cytotoxins.