This is it-the holy grail hair hero that started it all for K-PAK! Packed with a powerful combo of amino acids and Joico's smart keratin technology, this 5-minute treatment rebuilds and strengthens stressed strands to instantly restore hair to its healthy-looking greatness. It's hair reconstruction so targeted, so transformative, it's the fave of millions of stylists-and we have the awards to prove it*. o Rebuilds and fortifies damaged hair o 64% less breakage** o Instantly healthier-looking hair o Improves hair elasticity *Stylist's Choice Award Winner in 2001-2015, 2017 **Against combing breakage on damaged hair vs. a non-conditioning shampoo