Buy TRESemme Hair Shampoos - TRESemme Flawless Curls Vitamin B1 Curl Moisturizing Shampoo 32.0 oz (1 Liter) - For Curly or Wavy Hair. How-to-Use: Coat wet hair with a liberal amount of shampoo. Gently massage the scalp and roots with fingertips to work into a lather. Then, lightly squeeze the shampoo from roots to ends without scrubbing or roughing up to keep from tangling. Rinse thoroughly.