Isosorbitol dimethyl ether is used as an excipient in the field of medicine for topical applications such as ointments and tinctures. It can also be used in cosmetics to significantly enhance the effect of sunscreen, wrinkle resistance, spot removal, acne elimination, skin care and moisturizing, weight loss, breast cream, hair growth agent, hair dye and other products. It is an ideal solvent, penetrant and carrier in the cosmetics industry. It can also be used for pesticides, which can enhance the penetration of pesticides inside and outside pests, enhance efficacy, reduce pest resistance, reduce environmental pollution, and especially reduce the direct harm of pesticides to humans.