Bird's nest contains cell division hormone and epidermal growth factor to promote cell regeneration; contains a large amount of protein and biological activating factor, promotes the growth and development of human tissues, helps nourish yin, moisturize, beauty, and prevent aging. Shizimei Bird's Nest Reservoir Moisturizing Mask contains bird's nest (golden swiftlet's nest) extract and hyaluronic acid to rejuvenate rough and dry skin, while lemon, green tea extract and other active ingredients make dull skin whiter.