L'ANZA's Volume line works to create body, volume, and fullness in even the thinnest of hair. How does it work? It contains our advanced, proprietary ingredient KB2 (Keratin Bond System 2). KB2 incorporates proteins and amino acids to heal and fortify hair that is limp and flat. Volume strengthens hair's internal structure, thus adding radiance and fullness. The result is incredible performance, healthier hair, and extraordinary shine. The Volume line takes hair as it is and makes it bigger and better!