Joico K-PAK H.K.P. Liquid Protein Chemical Perfector is a pure liquid form of human hair keratin protein that improves chemical services as a porosity equalizer when used for color or to improve hair's strength and integrity when perming or straightening. When used with color services, color lasts longer, looks more vibrant and is even from scalp to ends. When used with perming or straightening, H.K.P. strengthens hair and results in improved texture patterns that last longer with less damage occurring during the processing stage.