As a lash tech this is a must to have apart of your set up. If you work in a controlled environment with aircon or do not have air conditioning , determing if your surroundings are within the correct scope of use for products is an essential factor for your clients lash retention.
With an all in one clock, this hygrometer tells you the humidity and also temperature in the room. Please read your desired adhesive direction and use within these scopes
example:
Lasa lashes Crystal bond Adhesive
(50-70%) humidity
(15-25°c) temperature