Material: Bone collagen, hyaluronic acid, glycerine, collagen Lack of sleep,often staying up all night who living an irregular Name: crystal eye mask (4th generations)Weight: Product weight: 6gGross weight: 10gMaterial: Bone collagen, hyaluronic acid, glycerine, collagenProduct features (suitable for): Lack of sleep,often staying up all night who living an irregular life, and old-prevention of ...