This Japanese eyelash tonic is now my go-to mascara primer — it helps prevent crunchy, stray lashes and conditions to give me fuller, healthier-looking lashes - Business Insider Posted by 0x000216 September 05, 2019 This Japanese eyelash tonic is now my go-to mascara primer — it helps prevent crunchy, stray lashes and conditions to give me fuller, healthier-looking lashes