The Eisenberg Definition Sourcils & Base pour les Cils is designed to perfectly define and enhance the appearance of your eyebrows while serving as an intensive lash base treatment. This dual-action formula provides immaculate shaping for your brows, ensuring natural-looking definition throughout the day. As a lash base, it works to condition and strengthen your natural lashes, preparing them for effective mascara application or providing standalone care. Its precise applicator allows for controlled, even coverage, making it suitable for both detailed brow sculpting and comprehensive lash conditioning.