Rich epidermal growth factor promotes cell division and regeneration, and repairs damaged cells. It has good effects on rejuvenating skin, preventing aging, preventing stretch marks, recovering wounds after operation and repairing scars. The water-soluble protein in bird's nest is easier to absorb. Bird's nest is flat, suitable for men, women and children, and people of all physiques. Except for some tumor patients, people who are allergic to protein should not eat it.