Joico Verocolor Hair Color is the only haircolor in the world that uses the reconstructive qualities of K-PAK Deep-Penetrating Reconstructor, Joico's world-renowned hair reconstructor, in its formula. Use the Joico Hair Color Chart above to choose the correct color swatch. K-Pak's 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 structure's surface. The benefit is deep penetration into the cuticle to repair damage while adding condition, strength and shine. VeroColor has a pure creme texture with a water-soluble base. It is easy to mix. An additional benefit of water-solubility is that VeroColor is simply rinsed from the hair after processing. There is no need to shampoo. Therefore, the freshly-deposited dye molecules are given time to stabilize and "set" in the hair. VeroColor is structured with a calibrated ammonia level system.