What is Swiftlet Nest Extract? -Swiftlet nest essence is known as caviar of the east. It is considered a delicacy in China and many parts of Asia. This unique ingredient is a combination "complex." It contains a compound that has 5 hydroxyl groups making it attract and retain water and moisture. It also has potent antioxidant properties, which in turn has anti wrinkle effects and improves the skin's firmness and elasticity.