There is no single temperature that is right for every professional lash adhesive. Always begin with the working conditions recommended by the manufacturer of your specific adhesive.
Temperature is important because your adhesive is being used inside an environment. Humidity, temperature, airflow, adhesive formula, and your working speed can all influence what you experience during application.
Why Artists Miss Temperature Changes
Your lash room can feel comfortable while the conditions have changed enough to affect how your adhesive behaves.
This happens frequently when seasons change. Heating comes on during winter. Air conditioning starts running in summer. A fan is moved. A door stays open. Your studio may feel almost the same to you, but your working environment is different.
If an adhesive that normally works well suddenly feels different, check both temperature and humidity before assuming the bottle is bad.
Know Your Normal
One of the best things you can do is record room conditions when everything is working well.
If your adhesive normally performs beautifully at certain measured conditions and suddenly behaves differently after a room change, you now have useful information for troubleshooting.
This is more valuable than searching online for someone else's perfect temperature because their adhesive, studio, and application speed may be different from yours.
The Takeaway
Use the manufacturer's recommended temperature range as your starting point, then learn what consistent adhesive performance looks like in your own room.
When something suddenly changes, compare it with your normal conditions before changing your entire application system.
Learn next: What Humidity Is Best for Lash Extensions? Why Is My Lash Adhesive Curing Too Fast? How Can I Improve Lash Retention?