The Pump is designed to meet your specific needs, This premium one-push pump dispenser is made to fit Pureology Shampoo and Conditioner 33.8 oz Bottles. Made to last, this pump dispenser is crafted from heavy-duty plastic material, ensuring durability and sustainability. You can wash and reuse it multiple times, reducing your environmental footprint. Installing this pump dispenser is a breeze - simply screw it onto your bottle and it's ready to use. No complex instructions or tools are required. Precise control at your fingertips. Each pump stroke dispenses 8 cc of Shampoo or Conditioner, allowing you to measure the amount you need and minimize waste accurately. The Pump is BPA safe.