The Brow Microfilling Pen creates the illusion of natural brow hair with 3 ultra-fine lines in a single stroke It's designed to blend in with existing hairs fill in gaps AND make brows appear where before there were none The easy-to-apply formula of this brow pen looks natural and is waterproof smudge-proof and longwearing creating a microbladed effect that lasts for 24 hours Define the eyes such a storke of genius-on one end a superfine tip that deliver jet black pegment Dark color