Olaplex No.9 Bond Protector Nourishing Hair Serum 90ml

Olaplex No.9 Bond Protector Nourishing Hair Serum 90ml is a daily-use leave-in serum from the iconic Olaplex bond-building family — formulated to protect the look of damaged hair, smooth frizz and add weightless shine across all hair types. Its lightweight, fast-absorbing formula seals split ends, primes hair for styling, and shields against humidity, pollution and heat damage in a single, multi-benefit step.

About Olaplex

Olaplex is the American haircare brand that revolutionised the industry in 2014 with its patented bond-building technology — a chemical breakthrough that helps repair the look of damage at the structural level. Today the line spans both salon-only and at-home formulas, with No.9 designed as a lightweight, daily-use leave-in serum for everyday styling and protection.

Key features

• Daily-use leave-in serum suitable for all hair types — including coloured and chemically treated
• Olaplex bond-building technology helps protect the look of damaged hair
• Provides up to 24 hours of frizz control and humidity resistance
• Lightweight, fast-absorbing formula leaves no greasy residue or build-up
• Vegan, cruelty-free, sulphate-free and silicone-free

Who it's for

For all hair types — including fine, oily and dehydrated hair that struggles with heavier oils. Particularly well suited to those who heat-style daily or live in humid climates, and a strong pick for users completing the Olaplex bond-building routine at home. Pairs naturally with the rest of the Olaplex line — No.3 Hair Perfector, No.4 Bond Maintenance Shampoo and No.5 Conditioner.

How to use

1. Apply daily to damp or dry hair, before or after styling.
2. Dispense 1–4 pumps into the palm, depending on hair length and thickness.
3. Smooth evenly through the mid-lengths and ends; avoid the scalp.
4. Style as usual — blow-dry, air-dry or heat-style as preferred.
5. Reapply on dry hair throughout the day to refresh frizz control and shine.

Specifications

• Type: Leave-in nourishing hair serum
• Size: 90ml
• Format: Pump bottle
• Hair type: All
• Brand: Olaplex
• Range: No.9 Bond Protector