What makes Universal lash glue so impressive? Universal lash adhesive takes 1-2 seconds to dry. It can be used whether you are a beginner or an expert lash technician, this is what has given this adhesive its name UNIVERSAL. TheI adhesive is flexible and adaptable no matter what style of extensions you are creating. The retention using this glue is up to 6-7 weeks which will be music to your ears as a lash artist. Our glues are manufactured here in the UK, meeting all the safety criteria. Adhesive specifications Colour: Black Ideal Temperature: 18-24 Degrees Celsius Ideal Humidty: 40% - 70% Curing time: 1 - 2 seconds Viscosity: Thin Our bottles are 5g. Safety Data Sheet: https://cdn.shopify.com/s/files/1/0267/0824/6600/files/Lash_Idol_Universal_Safety_Data_Sheet.pdf?v=1615890022