Eyelash growth serum works by extending the growth cycle of the hair, meaning that the eyelash becomes longer before it is naturally shed, and by increasing the number of hairs that are produced.
The serum is applied once per day onto clean eyes using a specific applicator that is discarded after use. Contact lenses need to be removed but can be put in 15 minutes after application.
Effects can start to be seen after a couple of weeks; initially, the lashes get longer and then thicker and darker. Reaching this stage takes around 3 months.