L'Oreal Paris Pencil Perfect Self Advancing Eyeliner, Carbon Black, The no smudge eyeliner glides on softly and smoothly for the perfect line. Ophthalmologist-tested. Suitable as an eyeliner for sensitive eyes and contact lens wearers. All day wear. Instructions Apply along lash line starting from the inner corner of eye working outwards. To advance the tip, gently twist the bottom of the pencil to the right until the pencil point is sharpened to the desired point for use. Warnings Safety Warning: Eye cosmetics in a scratched, infected, or irritated eye and scratches from cosmetic eye applicators can lead to eye damage, and in extreme cases, even blindness.