Anyone who watched The Eras Tour documentary knows Taylor Swift delivers nonstop outfit changes, choreography and vocals. But fans also spotted a smaller detail backstage: a volumizing conditioner tucked among her essentials. It's a subtle clue behind her signature bouncy, full-looking hair. While getting ready for back-to-back shows, Swift relied on products that could keep up. One of them is the Christophe Robin Delicate Volumizing Conditioner, which just so happens to be now 25% off.