The protective prowess of our bestselling Luster Lock Treatment meets the ease of a spray for spectacularly shiny, healthy-looking hair that resists breakage and stays vibrant longer. - Locks in over 82% of color vibrancy for up to 8 weeks* - 2X stronger hair** - Protects from heat styling - Instant detangling - Controls frizz and boosts shine - UVA/UVB protection for haircolor *Using K-PAK Color Therapy Shampoo after 18 washes **Against combing breakage on damaged hair vs. a non-conditioning shampoo