Click to get Replacing Nozzles and the Nozzle Opener~ VEYES INC Extended Retention Lash Adhesive can bond lashes up to 6-8 weeks,and is formulated for experienced lash artist that needs an ultra-fast drying adhesive. It works better in higher humidity conditions, normally 40-70% is ok to use, but it works best in humidity between 45-55% and temperature between 69-75F. For some lower humidity, you can use together with the Lash Bonder to help speed up drying time. The biggest feature of this glue is her extended retention, which greatly helps reduce the time and amount of work. PROFESSIONAL TIPS This glue is recommended for Professionals in Classic, Volume, and Mega Volume lashing. Use the enclosed glue pin to pierce the sealed tip before use! Manually shake for 1-2 minutes or 15-20 seconds by VEYELASH Glue Shaker before use. Replace glue drop every 15-20 minutes. Wipe nozzle clean after every use with Adhesive Wipes. Close tight after use. Shelf Life: opened bottles/30 days ; unopened bottles/6 months stocking in cool, dry area. Ingredient: Ethyl Cyanoacrylate, Carbon black, water CAUTION This glue is only recommended for professional lash artists. Please Never use it for self-application or with clusters or strip lashes!!! Store adhesive in an Adhesive Container in cool, dry area. Product must only be used on completely closed eyes throughout application. Product must be used in a well-ventilated work environment. Use under eye gel patches or medical foam tape to minimize fumes. Be mindful that lash extension adhesive fumes may cause an allergic reaction to certain people. Patch test is required before using this product. Different adhesives has different % of ingredients. DO NOT APPLY GLUE ON SKIN. Excessive amounts of glue on the skin may cause burns or superficial damage to the skin or hair. VEYELASH is not responsible for any accidents or misuse of adhesive. Keep away from heat, children, and pets. Open adhesive items can not be returned or refunded.