This revolutionary Olaplex No.0 Intensive Bond Building Hair Treatment delivers maximum strength protection in an ultra-lightweight formula. Visibly strengthen and nourish your strands for a luxurious, glossy finish with reduced appearance of damage. Enjoy stronger, healthier hair with the highest available concentration of patented bond-building technology.. 1 x Olaplex No.0 Intensive Bond Building Hair Treatment 155ml. Lightweight formula. Strengthens and nourishes hair