Eugenyl glucoside is a product of eugenol glucosylation. Eugenol is the principal chemical component of clove oil, accounting for more than 90%, has been well known for its antioxidant, anti-proliferative, analgesic, local anesthetic, anti-inflammatory, antibacterial, and hair growing effects. Eugenol belongs to the class of essential oil that is generally recognized as safe (GRAS) by Food and Drug Administration. Eugenol is liable to sublimate and has a peculiar smell, its modification is needed for application as a component of hair restorers. Therefore, eugenyl glucoside is being produced by organic synthesis and commercially used as an additive in hair restorers since eugenyl glucoside is gradually degraded into eugenol by the indigeneous microorganisms of human skin and acts as a pro-drug of a hair restorer.