Shampoo, rinse, condition. Decade after decade, not much has changed. But recently, the buzz has been building about a shift in that shampoo and condition routine. Dubbed conditioning cleansing or “co-washing” by some, it’s a new approach to cleansing and caring for hair. The main difference? You don’t use shampoo. Instead, you apply a (sham)poo-free formula—commonly called a cleansing conditioner. Cleansing conditioners are gentle, detergent-free, all-in-one formulas that clean, hydrate and condition hair in one step.