Packed with a powerful combo of amino acids and Joico smart Keratin technology this 5-minute treatment rebuilds and strengthens stressed strands to instantly restore hair to its healthy-looking greatness. K-Pak Deep-Penetrating Reconstructor Repairing Keratin Hair Treatment 5.1 fl oz a reconstructing conditioner zeroes in on damage and dryness with laser-like precision instantly replenishing shine strength and manageability where strands need it most Joico.