Anyone can go blond. But the right hair color products achieve a vivid, true-to-you shade. Joico Vero K-Pak Color CCV Violet Corrector neutralizes dull yellow and brassy tones for a truer blond result. CCV Violet Corrector contains Joico’s Quadramine Complex, a dual-charged hybrid protein formula with 19 amino acids to reconstruct strands. With CCV Violet Correct, you get healthier hair and longer lasting color.