Small, lightweight and portable round shaped black coloured PVC Hygrometer.

The professional Lash Stylists must have product. This one is great for mobile lash techs!

Hygrometers read and display the Relative Humidity (RH) as a percentage and temperature in the area where they are placed. You can use its reading to determine if your environment is at the optimal levels for your adhesive to perform effectively. If you are not sure of the optimum temperature and humidity for your adhesive, check with your supplier. If your environment is too cold or warm, or too dry or humid, you can take steps to manage your environment and / or change to an adhesive that works better in that range.