Eye of Horus Brow Define in Dark. Eye of Horus Brow Define in Dark. Shape, color and define your brows with just a few strokes of the Eye of Horus Brow Define Dark. This slimline, retractable pencil will glide over the hairs, depositing the perfect amount of product for natural looking brows and a long-lasting finish.. In Nile- dark. Vegan & cruelty-free. Enriched with Organic Castor Oil to stimulate hair growth. 0.08g/0.0028 oz. Starting at the base of your brows, use the pencil to create fine, hair-strokes that mimic your natural hair growth.. Once complete, use the spoolie brush to gently comb over the hairs for perfectly groomed and blended brows. Repeat to achieve desired look.. EYOF-WU13. BROW03.