Pro Lash Glue No2 is a product for the accomplished Lash Artist/Technician. It will dry in 1-2 seconds in the right conditions. So your room needs to be ideally a minimum of 22-25deg Celsius and humidity between the range of 30-70% but ideally between 45-60%. This will give you the very best performance! Happy Lashing!
Above mentioned is the ideal but do keep in mind we all used glues prior to knowing all this. I have used this particular glue for many years and always had great retention regardless of conditions.
All bottles now come with a spare nozzle and Shaking Cap!
See examples of retention love for our glue pictured!