PRO TIPS - Ensure you always keep the lid on and keep it UPRIGHT-TIP DOWN to prevent dry when NOT in use. WATERPROOF & SMUDGE-PROOF - Our waterproof and smudge-proof formula doesn't ruin its look while coming in contact with water or sweat. LONG LASTING - FENVIRN eyebrow pencil stays on all day in the place and lasts up to 24 hours if not rubbing the brows too hard. NATURAL LOOKING HAIR-LIKE STROKES - FENVIRN eyebrow pen creates the illusion of fuller brows by creating ultra-fine, precise lines that blend seamlessly into your existing brow hair. Black Brown - Black Brown is the lighter shade than Black. It is suitable for black brown and black hair.