A proprietary mix of 5 types of HA that smooth the skin, thereby decreasing the appearance of fine lines and wrinkles 5 Types of Hyaluronic Acid Time Release HA - Proprietary ingredient for sustained release of HA Sodium Hyaluronate - For immediate hydration Uncross-Linked HA - For smoothness and hydration Nano HA - Soothes skin Cross-Linked HA - Provides long-lasting hydration for up to 8 hours About this item Instantly smoothes the appearance of fine lines and wrinkles Immediate hydration Improves the appearance of skin texture and roughness Brand New, EXP:2025，2oz.