Anyone growing out their hair whose ends break or split before they reach the length they want. It works for most hair types, including colour-treated hair, and is an easy everyday shampoo for home use.

Hair grows roughly the same amount each month; what stops it looking longer is breakage at the ends. Extreme Length targets that problem directly, starting with a gentle biotin shampoo that helps keep strands strong while it cleanses. With the conditioner and Sealer, Redken measured 81% less breakage than a non-conditioning shampoo, which is what makes the difference for people trying to keep their length.

• Apply to wet hair and massage into a lather.
• Rinse thoroughly. In case of contact with eyes, rinse them immediately.
• Follow with Extreme Length Conditioner and Extreme Length Sealer.

Pros:

• Designed around length retention, not just repair
• Gentle enough for regular use and colour-treated hair
• Part of a system Redken tested for 81% less breakage
• Litre size available

Cons:

• Contains sulfates
• It helps keep length by reducing breakage; it does not make hair grow faster from the scalp
• Works best with the matching conditioner and Sealer