Yeast extract is a natural and safe active substance that is widely used in the food industry as an antioxidant for natural seasonings or oily foods. With the continuous deepening of research, yeast extract has been used as a new type of cosmetic raw material in high-end cosmetics due to its unique efficacy. Yeast extract is rich in nutrients such as amino acids, peptides, and vitamins. Amino acids are essential substances for the human body and can be easily absorbed by the skin, helping to moisturize and repair the skin barrier, and improve skin condition; Peptides can promote the metabolism of keratinocytes, make the skin smoother and more elastic, and inhibit the production of melanin. In addition, yeast extract also contains components such as vitamins A, C, E, which have anti-aging, antioxidant, and whitening effects. Research has shown that the various activities exhibit...