Designed for people with fine, thin, or limp hair who want more volume and body without switching to a heavier, moisturizing system. It's a consumer daily-use shampoo-and-conditioner pairing, not a professional in-salon treatment, and it isn't intended for thick, coarse, or already-voluminous hair types that don't need extra lift.

Buying this as a matched kit rather than mixing and matching matters because the 87%-more-volume claim, per Paul Mitchell's own testing, applies to the shampoo and conditioner used together, not either product alone. Panthenol and wheat-derived proteins build a light protective coating on the hair shaft that adds thickness and body to fine strands without the drag heavier conditioning ingredients would cause.

Apply the Extra-Body Shampoo to wet hair, massage into a lather, and rinse. Repeat if hair needs a second cleanse. Follow with the Extra-Body Conditioner: apply a small amount to clean, damp hair, concentrating on mid-lengths and ends rather than the roots, then rinse before styling as usual.

The wheat-protein-and-panthenol combination adds body without the heaviness of oil- or butter-based systems, which suits fine hair that goes limp under richer products, and selling it as a matched shampoo-and-conditioner system means the volumizing effect is designed to build across both steps rather than rely on one product alone. Because the focus is volume rather than moisture, it isn't formulated to deeply hydrate dry or coarse hair, and applying the conditioner too heavily at the roots can undercut the lift it's meant to add.