Our most favourite formula ; Crystal Bond offers retention of up to 8 weeks! It’s flexible, non-wicking, and has a stellar hold. Perfect for lower humidity levels, it performs best at 40-55% humidity but can work as low as 35%. This versatile, high-quality adhesive is becoming a favorite among lash artists. Size : 5ml Viscosity : Thin Glue Color : Black Dry Time : 1 to 2 Seconds Retention : Up to 8 weeks Intended for : Classic or Volume Ideal Humidity : 35% - 55% Ideal Temp : 20C to 23.5C Care Instructions: Unopened Bottles: Store in a cool, dark place for up to 8 months Shake vigorously for 1 minute before use Opened Bottles: Store in a cool, dry place (not in the fridge) Seal tightly in the original packet with silica gel Clean the lid after each use and store upright Shelf life after opening: Up to 7 weeks For professional use only. Ensure optimal lash application with Crystal Bond Lash Adhesive!