1. Isosorbide two methyl ether (DMI) is applied to cosmetics: it can obviously enhance the effect of sunscreen, wrinkle resistance, acne dispelling, acne removing, skin care and moisturizing, weight reduction, breast cream, hair growth agent and hair coloring products. It is an ideal solvent for cosmetics industry. ② Application in the field of Medicine: plaster, tincture, etc. The curative effect of the product is significantly improved. ③ Application to pesticides: it can enhance the penetration of pesticides in and out of pests, enhance the efficacy and reduce the drug resistance of pests; Reduce the use times and dosage of pesticides, reduce environmental pollution, especially the direct harm of pesticides to human beings.