Viscosity: Thin consistency for easy application and precise control. Drying time: Ultra fast drying in just 0.5-1 second for efficient sessions. Strength: Extremely strong bond for long-lasting results. Room temperature: Optimal performance at 64.4°F - 71.6°F for consistent results. Humidity range: Ideal for use in environments with 50-65% humidity for best adhesion. Power Bond glue/adhesive by London Lash is a professional grade eyelash extension adhesive designed for qualified lash technicians. This thin viscosity adhesive boasts an extremely fast drying time of 0.5-1 second, making it ideal for advanced lash artists with over 1000-1500 lash sets experience. The adhesive is extremely strong and should be used in a controlled environment with a room temperature of 64.4°F - 71.6°F and humidity of 50-65%. The 5ml bottle weighs 28 grams and is not water resistant. For best results, try a sample before purchasing the full size glue bottle.