Many factors contribute to hair damage, including thermal styling, chemical services and environmental elements; these weaken the amino acids of the hair giving you weak, dull and brittle hair. To repair the damage, it's necessary to replace the lost amino acids. Joico pushes the limits of science with their new Quadramine Complex; an exclusive blend of positively and negatively charged proteins that adhere to and reconstruct the hair from the inside out. With the highest concentration of Quadramine Complex in its formulas, K-Pak delivers the ultimate in healthy hair. A powerful blend of anti-oxidants, essential fatty acids and botanical moisturizers protect hair and prevent damage while a Keratin Silicone Complex locks in moisture, seals the cuticle and delivers intense shine and smoothness. Let K-Pak rebuild your hair!