Introducing the new INTENSE PENLINER by Insight. Intense is a new waterproof, smudge-proof, and long-lasting liquid eyeliner that is rich in pigment. Intense is a breakthrough in makeup technology that will help you achieve a beautiful look that lasts all day. INTENSE can be used as a dramatic winged liner or as a thin line on the lash line. This liner is perfect for all occasions and it is so easy to use. Intense is a liquid eyeliner that is waterproof, smudge-proof, and long-lasting. The rich pigment will help you achieve a beautiful look that lasts all day. It can be used as a dramatic winged liner or as a thin line on the lash line. This liner is perfect for all occasions and it is so easy to use.