Deep-cleansing • Exfoliating Reuzel™ Scrub Shampoo is perfect for maintaining a healthy scalp. This invigorating, exfoliating blend is perfect for clients who often use a lot of hair products. As a shampoo for less frequent use, it's great for removing product buildup from the hair. Our T-4 Tonic blend of witch hazel, nettle, rosemary, and horsetail is ideal for all hair types.