The Curly Girl Method is an approach to hair care designed for naturally curly hair that has not been chemically relaxed. It is similar to the "no poo" method in that it discourages the use of shampoo. Among other things, it calls for the use of a cleansing conditioner in place of shampoo (also called "conditioner washing" or "co-washing"), no silicones (used in many commercial conditioners and styling products), the use of a diffuser when blowdrying, and no combs, brushes, or terrycloth towels. It also includes tips for using hair gel and other styling products. The aim in general is to treat naturally curly hair gently, minimizing damage to the hair cuticle; to keep it moisturized, since curly hair is more prone to dryness than straight hair; and, perhaps most significantly, to accentuate rather than interfere with the hair's natural curl pattern.
The most prominent curly hair classification system groups curly types from 2 to 4 and A to C (representing increasing tightness of the curl) with type 1 representing the complete absence of curl (or straight hair). Type 2 typically encompasses varying degrees of wavy hair, Type 3 contains loose, spiraled curls, and Type 4 includes tighter curls, kinks, and coils.