Give colour-treated hair a boost with the Joico K-Pak Color Therapy Luster Lock. This rich and nourishing treatment gives instant, radiant shine, vibrant colour and smooth, sleek locks for easier styling. The deeply repairing formula is enriched with manketti and argan oils to seal the hair cuticle to protect the hair and lock in colour vibrancy, helping it to last longer between salon trips. Extracts of soy, silk and seaweed nourish and strengthen the hair shaft, smoothing tresses for less damage when styling. Suitable for all colour-treated hair, from blondes to brunettes, lowlights to highlights.