Sketch Stick pencils for eyebrows are retractable and refillable. The Sketch stick is made with Brazilian wax for a natural and smudge proof finish. They are enriched with avocado oil and Vitamin E for ease of application and hydration. The brush on the opposite end of the pencil helps to blend the color. Refilling is easy, simply pull out the empty cartridge and replace with a new one. You can purchase 1 refill for $15 or 2 for $25.