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Lifetime Manufacturer's Guarantee: To demonstrate how confident we are in our products, we offer a lifetime money-back guarantee with every purchase! If you are not completely satisfied with your eyelashes, we will refund unconditionally!. Please Note: Due to the low temperature in winter, please leave the eyelash bond and seal in room temperature for more than 3 hours after receiving the bond and seal lash glue (please do not put in hot water). Easy to Apply: The upgraded spiral mascara brush head makes it easier and more even for you to glue and seal your lashes on each natural eyelash. The fine brush head is sealed with eyelash glue, easy to apply mascara eyelash glue which is suitable for lash beginners. Super Strong Hold Lash Bond and Seal: This cluster lash glue offers more than 24hours super strong hold which is suitable for DIY lash extensions, individual eyelashes, cluster lashes and strip lashes. The glue blends in effectively with your own lashes for natural look. Double-head Design: 2-in-1 bond and seal lash glue exquisite double brush head design makes you more convenient when using. One side is the bond (5ml), black glue like mascara, easy to use. The other side is the seal (5ml), transparent ingredients to form a protective layer to strengthen and maintain the cluster lashes.