Give flat, thin hair a well-deserved boost of volume. Root to End Volumizing Shampoo is a SLS/SLES-free shampoo that provides a gentle but thorough cleanse to make sure there's nothing weighing down hair. Expect this lightweight formula to leave hair clean, soft and with lots of body. Like all Root to End products, this Volumizing Shampoo includes our proprietary Amino Acid Strand Reviving Complex to help retain the moisture in hair while conditioning and nourishing all hair types.