Lash Technicians: How to Work with Lash Glue in the Summer

Summer is around the corner once again. For lash techs it's the time of year you want over before it even begins. Sure, for everyone else it's all fun, pool parties, sun tanning, but for those of us who work with glue day in day out, the rising temperatures make work difficult. Even the best of the best eyelash glue will be temperamental in the rising heat, but here are some pointers on how to tackle this issue.

A huge factor in how the glue will behave is of course your room conditions. If the humidity and temperature fluctuate, then the difference between a great eyelash set and a wonky eye will be very noticeable. 

Temperature is the most important and noticeable factor. You're more likely to notice if the temperature changes, you are your own thermometer. It is more difficult to notice a change in humidity. If the temperature increases, we try to cool it down. By cooling down your work space it will also affect the humidity. It is a fine balance. Opening a window will let some breeze in but it will increase humidity and speed up the drying time of your lash adhesive. If you turn on your air-con, then the moisture in the air will be sucked out and your glue's drying time will slow down.

Lash Glue Conditions: What To Do If Your Humidity is Too Low? 

In low humidity your glue will slow down and it will be problematic to work with. The adhesive will take longer to dry so you'll be holding the eyelash extension in place for longer. If you're using premade fans it make cause them to close and/or lean to one side. Neither is desired.

  • Getting a humidifier will help in low humidity. Scented humidifiers add a touch of luxury and comfort for your clients.
  • Adding little droplets of water along the eyepatch using a microfibre brush will add moisture in areas necessary for your procedure.
  • Apply Primer in sections as you work to keep the lashes moistened
  • Using our Booster pretreatment on the lashes will give the lash glue a better grip. The Booster has an alkaline pH, this causes the hair cuticle to open up slightly, giving the lash a larger surface area for the glue to latch onto.
  • A hot tip from us is to use a dab of Booster on the London Lash strip. Going along the strip of lash extensions with a bit of Booster will prevent the premade fans from closing and speed up the glue's drying time.


Keeping track of the temperature and humidity around your workspace is easy. Add a Hygrometer to your collection and it's a done deal - you're set.

Remember, storing your glue in the recommended place is just as important, it will save you the product's shelf life and money in the long run.

What If Your Humidity is Too High? Best Eyelash Extension Glue for Humidity:

In higher humidity your eyelash glue will dry much faster than usual. This can be detrimental to the retention of the lash set. Imagine you've finished the perfect eyelash extensions (or so you thought) only to check through your work at the end, you give the extensions a thorough examination and you notice most of them are falling off as soon as you touch them. That is because the lash glue dried quickly and never formed a bond between the extension and the natural lash.

One thing to tackle this issue is getting a dehumidifier. Although, dehumidifiers can be quite loud and bulky. A smaller dehumidifier will not do a great job... so if a bulky machine is not for you then the best option is to find a perfect glue which dries more gradually. Our London Lash Glue collection is vast so the Glue Chart below can help you find the right glue for you.

London Lash Glue Chart for Eyelash Extension Adhesive Range

 TOP TIP

- Remember to change your glue dot regularly when dealing with temperature and humidity. Pay attention to your glue's behavior as it will also be affected on the dot, not just when applied to the individual lash extensions. If your lash glue turns stringy, it's time to dab a new drop.

- Using Superbonder at the end of the treatment will instantly cure the glue while leaving the bond flexible and not brittle. This will allow your clients to continue their Summer activities without having to worry about retention.

- And of course, once your client leaves the rest is in their hands. Advise your client to return for an infill around three weeks later, just in time to keep the lashes looking fresh for the rest of the season.