Olaplex Nº.9 Bond Protector Nourishing Hair Serum
The Nº.9 Bond Protector Nourishing Hair Serum, infused with patented OLAPLEX Bond Building Technology™, is a silicone-free antioxidant hair serum that instantly shields hair from pollution and protects against heat damage while adding satin shine and reducing static and tangles.
- Neutralizes free radicals and protects against pollution for up to 48 hours.
- Improves style memory and bounceback curls.
- Provides heat protection up to 450ºF (232ºC) for a satin shine look.
- Reduces tangles and static.
- Silicone free, sulfate free and pH balanced.
| Key Features | Heat protection up to 450ºF (232ºC), pollution protection for 48 hours, reduces static and tangles, improves curl bounceback, silicone-free and sulfate-free |
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FAQ
How long does the serum protect hair from pollution?
The serum provides protection against pollution for up to 48 hours.
Does it protect hair from heat damage?
Yes, it offers heat protection up to 450ºF (232ºC).
Is the serum suitable for curly hair?
Yes, it improves style memory and helps bounceback curls.

Richard Short –
I use this serum before styling and noticed my curls stay defined longer. It reduces frizz and gives a smooth, shiny finish without weighing down my hair. No silicone, which I appreciate. Works well with heat tools and feels light on the hair.
Joshua Russell –
My hair has been exposed to city pollution and windy conditions. After using this serum, it feels stronger and less damaged. The static is much lower and my hair tangles less during daily wear.
Dylan Martin –
I applied it to damp hair before blow-drying. The heat protection helped prevent damage, and the shine is natural and not greasy. My hair looks healthier and feels more resilient after regular use.
Alexandra Paterson –
It’s a great addition to my routine. I use it after washing and before styling. My hair holds its shape better and feels softer. No residue or buildup after use.