About reviewer 5 reviews I dont notice any changes of eyelash after applying this serum but I use it as eyeliner. This is best eyeliner for me! If it were a person, wersquod say, itrsquos agile, diligent multifunctional. Itrsquos mostly used as an emulsifier physicians formula waterproof eyeliner: and surfactant but most often it is used to solubilizefragrances...