Joico Verocolor Hair Color is the only haircolor in the world that uses the reconstructive qualities of K-PAK Deep-Penetrating Reconstructor, Joicos world-renowned hair reconstructor, in its formula. Use the Joico Hair Color Chart above to choose the correct color swatch. K-Paks properties in VeroColor result in the richest, longest-lasting color, with unprecedented condition and shine. The benefits of K-PAK in VeroColor are apparent immediately.VeroColor contains the unique reconstructive properties of the Cationic Triamine Complex formula. Since it is positively charged, it will adhere strongly to the hair structures surface. The benefit is deep penetration into the cuticle to repair damage while adding condition, strength and shine.