Rewind time with the Pureology Nano Works Gold sulfate-free shampoo and conditioner for aging hair. Give renewed energy to lackluster strands with a luxurious sulfate-free shampoo and conditioner for aging, color-treated hair. The rich, transforming formulas of Pureology Nano Works Gold restores youthful movement, suppleness and shine. Fortifying Keravis strengthens hair on the inside and ultra-light Golden Marula Oil nourishes and protects hair on the outside, leaving hair hydrated and protected but never greasy.