Please note that while this adhesive enables you to have up to 4 week retention, at 4 weeks post lash application, if a ReLash- has not occurred, a full lash extension removal (Peel Removal or Adhesive Removal) may be necessary prior to a lash application. Over the 4 week period, your natural lashes will grow extensively resulting in twisting of the natural lash and the extension being top heavy creating tension on natural lash follicle. When using or trying Xtreme Lashes Adhesives for the first time, save time and improve efficiency by purchasing an Xtreme Lashes Adhesive System or Adhesive & Eyelash Primer Set. Our Adhesive Systems include all of the essential application supplies for prepping and cleansing the natural lashes and eye area. Using the full system ensures the highest standards in sanitation, safety, and adhesive performance for longer-lasting lashes. It includes your choice of eyelash extension adhesive (glue), complementary supplies, and a client profile system. Next, our Adhesive & Eyelash Primer Set combines two essential lash application products that work together to increase eyelash extension adhesion and attachment longevity. Please note that our adhesives (except for Infinty. Please read listing on how to use Infinity) are ‘new generation’ adhesives. Our cyanoacrylate expert advice to always shake with the lid on. Do not ‘burp’ the bottles. Jade stones, tape. crystal or glass may reduce the properties of the adhesives. We recommend placing on plastic wells which will keep the adhesive fresher for longer. Shake the bottle thoroughly, then leave to stand for a minute or so before dispensing out a drop. There is no need to put a new ‘blob’ out every 10-15 minutes with our adhesives; they are fine grade and not like the traditional adhesives. Please follow our instructions for all our adhesives.