The neck mask we mainly produce is crystal collagen, such as gold collagen ,transparent ,collagen etc.The crystal neck mask is suitable for the general population who need neck care; it is especially suitable for neck wrinkles relaxation, dryness, lack of fair complexion, elastic mature skin, and loose neck after losing weight. Crystal neck mask can provide nutrients necessary for the skin layer of the neck, achieve moisture Skin, delayed aging, beauty, wrinkle removal.