The Ultimate Repair System by Olaplex is a must-have for anyone looking to revive their hair. Maria, the reviewer, raves about this two-step system that includes a number zero primer and a number three treatment. By applying the primer from roots to ends, Maria noticed a significant improvement in the strength and appearance of her hair. The treatment works deep within the strands, reducing breakage and split ends. Maria suggests leaving the treatment on for a while, using that time to be productive with tasks like vacuuming. After showering, she styles her hair with a diffuser and is thrilled with the results. Her curls are back, and her hair feels lightweight, shiny, and more voluminous. Maria highly recommends giving The Ultimate Repair System by Olaplex a try.