A highly-nourishing and reparative shampoo that leaves hair easier to manage, shinier and healthier with each use. It repairs and protects hair from everyday stresses — including damaged hair, split ends, and frizz — by re-linking broken bonds. N°4 is color-safe and proven to reduce breakage and strengthen all types of hair.

PH Balance: 6-6.5

How to Use

1. Apply and massage product throughout hair.

2. Rinse product from hair.

3. Follow with Olaplex N°5 Bond Maintenance Conditioner (sold separately).

When to Use
Formulated for daily/ every wash use.

Suitable & Beneficial to All Hair Types
DEA Free
Aldehydes Free
Formaldehyde Free
Vegan
Nut Free
Gluten Free
Cruelty Free
Sulfate Free
Paraben Free
Phthalte Free
Phosphate Free
PH Balanced