Yeast extract is produced by means of aqueous extraction. This process yields and extract containing all of the water-soluble active principles of beer yeast. Beer yeast contains high proportions of biologically relevant proteins, essential amino acids, vitamins of the B-group and mineral salts (phosphorus, potassium, sulfur, magnesium and calcium). Yeast has multiple benefits including anti-aging, soothing, conditioning, firming and moisturizing properties.