Providing secure hold for up to seven days, the Eylure Underlash Lash Bond and Remover Kit stars a strong-hold bond adhesive to apply your underlash clusters, alongside a gentle remover formula for when youre done. n The all-in-one bond formula requires no additional sealing steps to make your lash application routine faster and fuss-free. Simply dab onto the lash band and apply underneath your natural lashes for a seamless, undetectable effect.