ProLash High Performance Long Lasting Glue is designed to work best in 40-60% humidity and 20-25 degrees Celsius/ 68-77 degrees Fahrenheit.  For best preservation, keep glue at a consistent temperature, avoiding high and low temperatures, sunshine and submerging in water.  

ProLash Glue is a cyanoacrylate adhesive.  It is latex and formaldehyde free.  According to Wikipedia, Cyanoacrylates are a family of strong fast-acting adhesives with industrial, medical, and household uses. Cyanoacrylate adhesives have a short shelf life if not used, about one year from manufacture if unopened, one month once opened. In general, cyanoacrylate is an acrylic resin that rapidly polymerises in the presence of water (specifically hydroxide ions), forming long, strong chains, joining the bonded surfaces together. Because the presence of moisture causes the glue to set, exposure to normal levels of humidity in the air causes a thin skin to start to form within seconds, which very greatly slows the reaction. Because of this cyanoacrylate is applied thinly, to ensure that the reaction proceeds rapidly for bonding.(Wikipedia)

The reaction with moisture can cause a container of glue which has been opened and resealed to become unusable more quickly than if never opened. To minimise this reduction in shelf life cyanoacrylate, once opened, can be stored in an airtight container with a package of silica gel desiccant. (Wikipedia)  

Another technique to preserve opened glue is to use a glue pin to clog the opening of the tube to keep moisture out of the glue when it is not in use.  ProLash includes a glue pin with every purchase of our High Performance Glue because we believe it extends the life of the glue.  ProLash High Performance Glue contains the component cyanoacrylate, which polymerizes in the presence of water.  The humidity in the air is enough for the cyanoacrylate to polymerize.  Therefore, it is best to store our unopened bottles of glue in a dry place.  Also, before opening your bottle, store the bottle in an air-tight container or bag with a silicate bag or salt, then place it in the refrigerator or freezer.  Freezing will delay or even stop the polymerization.  Allow the glue bottle to return to room temperature before application.  A vacuum sealed bag is also a great way to store an unopened bottle of glue.  Once you open your bottle of glue, we suggest replacing the cap with a ProLash glue pin.  The pin in the cap will seal the outlet of the bottle so humidity cannot enter.  The glue will create a thin seal to the pin, which prevents humidity and air from entering and is easily popped open when glue pin is twisted off.  This method helps to prevent the lid from sticking and is a much tidier option.  It is helpful to wipe off the bottle opening between uses and before placing the glue pin on the bottle.  Note:  Do not ingest adhesive, label and store away from food when storing in refrigerator or freezer and keep away from children.

Also, Nano Misters can be used to complete the curing process after a set of eyelash extensions are complete.  This is the fastest way to cure the active glue on clients lashes.

Store glue in a dark, cool, dry place (10-23 degrees C/ 50-70 degrees F).  This will keep condensation from forming in bottle and disrupting glue consistency.  If you refrigerate, not lower than 10 degrees C/50 degrees F.   Store in closed package with silica gel pack.  This will keep air and humidity away from glue.  Keep glue at room temperature for 3 hours before using on client. 

Once bottle is open, keep it at a consistent temperature between 20-25 degrees C/68-77 degrees Fahrenheit because glue polimerisation is temperature-dependent.  Use individual drops of glue on your stone/crystal.  When one glue dot begins to get tacky and dry around edges, start a new glue dot.  Use glue stone stickers to protect stone.  Do not use tape.  Tape retains moisture and will dry glue too quickly.  You should only need to use one good size drop of glue in glue rings.  Clean stone/crystal or ring between each use.  

Glue life is estimated at 8-12 months from manufactured date, unopened and stored properly.

Once glue is opened and if it is cleaned and stored properly after each use, it will be useful for 6-8 weeks.

Formaldehyde-Free Adhesive:

With concerns of formaldehyde being labeled as a carcinogen by the US Department of Health and Human Services, we find it important to educate you on its role in the production of any lash adhesive on the market today.  Cyanoacrylate is present in all eyelash adhesives and is a formaldehyde and Ethyl Cyanoacetate derivative.  Cyanoacrylate is the derivative formed when the two chemicals react together.  It is used as an ingredient in all medical and non-medical grade adhesives used today.  Formaldehyde derivatives can be found in products such as eyelash adhesive, soaps, paints, make up, preservatives and more. This means that formaldehyde was used to make the products, however the final product does not contain traceable amounts.

 Ethyl Cyanoacetate + Formaldehyde = Ethyl Cyanoacrylate + water

Cyanoacrylate + Poly Alkyl Methacrylate + Pigment + Water + N-Methyl Pyrrolidone = ProLash High Performance Eyelash Adhesive

 Also, during the adhesive production process, traces of formaldehyde may not react with the cyanoacetate, so a purification process called chromatography is used to separate byproducts, like formaldehyde from the final product. This process is intended to remove any remaining impurities that remain from the process.  Any byproduct left after this process is completed, is such a small mount that it is not measurable or significant.  This allows ProLash High Performance Long Lasting Glue to be considered a formaldehyde-free product. 

Helpful Hints:  

*Always shake bottle well before use.

*Always quickly wipe off tip of glue bottle after use and place glue pin on.  The glue will adhere to the pin inside of the glue pin and seal off the bottle.  When you take the glue pin off, the seal with the pin will be broken.  Using a glue pin helps to keep moisture and air out of the glue bottle and decreases the glue that forms around the opening of the lid that is messy and often seals your bottle shut.  Less mess and longer lasting glue!

*If your bottle of glue is sealed shut, gently break the glue loose by squeezing the cap of the glue gently with a pair of pliers.  This will break up the layer of glue between the cap and nozzle and hopefully release the nozzle from the lid.  Use a glue pin to prevent this from happening.