Brand from Japan: Shiseido. Benefits: Brow product with an ultra-slim round core allows you to draw defined brows with precision. Waterproof formula yields long-lasting and smudge-proof results. Product's slim tip allows you to draw thin lines easily. How to use:To remove cartridge, turn the cartridge cap in the direction of the arrow inscribed on the product's cap.Turn the holder to the right and cut off around 1-2mm of the core's tip before use. When in use, be careful not to release too much product to prevent breakage. Close cap when not in use.To replace the core, pull out brow product cartridge (this product) from the holder and insert the new product.