My first impression with the packaging was that it appears well made, with a minimalist and elegant design. I was then impressed by the product itself. The sleek pen with a soft thistle brush tip coupled with the twist up modality made this the most functional lash serum applicator on the market. Most lash serums offer a thin brush attached to the cap of the bottle that would be dipped into the serum before application. The brush often picks up a scarce amount of serum and distributes the product unevenly across the lid. The fillage applicator squeezes out a generous amount of serum that can be controlled by twisting the bottom of the pen, which allows for even distribution across both eyelids. Within a single week, I noticed new growth from my lash line. Prior to using fillage, my lashes were weak after a year of lash extensions. Up until this point, I had chosen to try different growth serums and regrow my lashes to no avail. Nothing worked until I tried fillage. I had my lashes lifted immediately prior to my 2 week fillage trial. After a week, new baby lashes sprouted about 2-3mm from my lash line, and extended my existing lashes by the same length. My lash line looked fuller! I couldn’t believe how quick and drastic the difference was. The best part is that my eyelids did not darken as a side effect. Two weeks have passed now and my lashes are the healthiest they have ever been. I cannot be more in love with this formula!