This Onyx black ADHESIVE is a game changer! The first in our Onyx series.  No fumes, great for sensitive eyes. Can be used for classic or volume lashes. Recommended for Advanced technicians and warmer humid climates,  beginner lash technicians use (Onyx bond #2)Bonding time .05-1 second, 50-70% humidity, 15-25° celsius, 6-7 Week retention. Follow directions for ideal bond. Prep: wash with oil free cleanser, or Unique U lashes prep cleanser saline prior to use. Ingredients: Ethyl cyanoacrylate, PMMA, Carbon black