What it is: A refill cartridge designed to fit inside your Brow Lift Refillable Eyebrow Pencil, sold separately.What it does: This eyebrow formula mimics a full, fluffy hair effect and delivers a long-wearing natural finish to your brows. It's formulated with carnauba wax, which provides stretch and elasticity to your brows. Pure color pigments create natural-looking color with depth and no ashy undertones, and vitamin E hydrates and conditions. This waterproof precision pencil is resistant to smudging and humidity, delivering color that lasts for up to 16 hours. How to use: Click the refill into your brow pencil. Start by brushing the hairs upward to see the natural shape of your brows. Use the pointed end of the pencil to fill in your eyebrow line with short, regular strokes to mimic your natural hair. For a softer filled-in effect, use the flat side of the pencil. To finish, comb through your brows to groom the look. It's ideal for brows that are thin or sparse, faded or lacking shape. Refill only; eyebrow pencil sold separately Paraben-free; sulfate-free Leaping Bunny-certified for a commitment to cruelty-free testing