The invention relates to the technical field of cosmetics, in particular to an essence, a preparation method and application. The essence is prepared from a dosage form I and a dosage form II through mixing, wherein the dosage form I comprises the following components in percentage by mass: 1-3% of a mixture of xylitol glucoside, dehydrated xylitol and xylitol, 1-5% of a water solution of maltooligosyl glucoside and hydrogenated starch hydrolysate, 0.05-0.3% of sodium hyaluronate, 1-10% of glycerinum, 1-10% of butanediol, 0.3-0.8% of an anticorrosion synergist, 0.3-3% of 1,2-hexanediol, 0.5-5% of a stimulating inhibition factor, 0.5-3% of an anti-allergy antipruritic, 0.5-3% of oat beta-glucan solution, 0.5-5% of water-soluble ceramide and the balance of water; the dosage form II is prepared from a mixed solution A through freezing and drying, wherein the mixed solution A comprises the following components in percentage by mass: 0.3-5% of hydrolyzed collagen, 1-20% of mannitol, 0.3-10% of gelatin, 0.003-0.01% of oligopeptide-3 and the balance of water. The essence provided by the invention can be used for effectively solving the skin sensitivity problem caused by excessive skin cornification.