P0+ SINERGY BIOPERMANENT for resistant hair: the first organic waving treatment, the result of advanced technologies, which contains neither ammonia nor thioglycolic acid or derivatives thereof. The formula enriched with amino acid complex of marine collagen, keratin and radish root, restructures the hair fiber, allowing you to create an extremely natural curl, elastic and soft to the touch. Excellent respect for colored hair. Biopermanent P0 specific for resistant hair spreads hydration and nutrition, essential notes for a healthy and vital hair and allows to enhance the waviness giving hair volume and body.