In the category of effective, fast-acting reparative shampoo, Olaplex stands out with its N°4. The formula is vouched to repair existing damage and protect from newly occurring one.

The reparative shampoo

is part of Olaplex’s Bond Maintenance hair care routine which is “the only patented system to noticeably repair extreme damage—turn dry, brittle hair into soft, shiny, and more resilient hair.”

Olaplex’s patented active chemistry is said to “work on a molecular level.” A single molecule, known as Bis-Aminopropyl Diglycol Dimaleate, has proven to dramatically improve hair strength and increase protection.

The Olaplex N°4 reparative shampoo formula is ideal for all kinds of hair types and is pH-balanced. In addition to this, it is also free from phosphate, phthalates, paraben, gluten, nuts, sulfate, and—of course—cruelty.

Image Credit: OLAPEX