NexxuSphere technology time released nutrients. Nexxus Salon-Smoothing hair care products lock-out frizz, tame flyaways, and balance your hair's natural moisture levels for luxuriously silky, just-from-the salon sleek hair. Sleektress Sumptuous Smoothing Shampoo, with a lightweight blend of silk amino acids, avocado oil, and advanced NexxuSphere technology, gently cleanses without roughing up hair's cuticles for a smooth start.