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Nº.9 Bond Protector Nourishing Hair Serum video
(6572)6572

Nº.9 Bond Protector Nourishing Hair Serum

Olaplex

$32.00Current Price $32.00
3 Ounce
3 people viewing now
Free returns anytime
Sold by Nordstrom
Select fulfillment method
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Highlights

  • Cruelty-free
  • Vegan
  • Hyaluronic acid

Details & care

What it is: A weightless, silicone-free, leave-in hair serum that shields strands from pollution for 48 hours and provides heat protection up to 450°F.

Who it's for: All hair types and textures.

What it does: The leave-in serum protects strands, leaving hair shiny, smooth and tangle-free. Red Algae Extract bonds to wet hair like an invisible shield to block pollutants, nourish hair, and deliver potent antioxidants to the cuticle that neutralize free radicals before they cause damage.

How to use: As the first step in your styling routine, apply a small amount to damp hair working upward from ends to roots. Use more as needed for longer, thicker hair. Use on days you wash your hair and any days in between for added protection.

  • 3 oz.
  • Paraben-free; phthalate-free; sulfate-free; silicone-free; gluten-free; phosphate-free
  • Cruelty-free
  • Vegan
  • Part of BEAUTYSPACE
  • Item #7221767
  • Core Product ID 333336Y225

Ingredients

Water (Aqua/Eau), Propanediol, Betaine, Quaternium-22, Sodium Hyaluronate, Bis-Aminopropyl Diglycol Dimaleate, Cetrimonium Chloride, Panthenol, Hydroxyethylcellulose, PVP, Guar Hydroxypropyltrimonium Chloride, Furcellaria Lumbricalis Extract, Pelvetia Canaliculata Extract, Xylitylglucoside, Polyquaternium-44, Anhydroxylitol, Maltitol, Citric Acid, Trisodium Ethylenediamine Disuccinate, Xylitol, Sorbic Acid, Phenoxyethanol, Ethylhexylglycerin, Sodium Benzoate, Fragrance (Parfum), Citral, Citronellol, Hexyl Cinnamal, Limonene, Linalool.
Ingredients are subject to change at the manufacturer's discretion. For the most complete and up-to-date list of ingredients, refer to the product packaging

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Olaplex

This brand is part of BEAUTYSPACE, a global beauty destination offering a carefully edited selection of the world's most innovative beauty products, including cosmetics, skin care and tools. Since its founding in 1993, it has given emerging brands access to a broader market—through Nordstrom and other prominent retailers. Today, BEAUTYSPACE encompasses more than 70 global brands.

Reviews

(6572)65724.4 out of 5
Write a Review

Most helpful positive review

Aug 22, 2024

This is my go-to hair serum

No fragrance with hair smoothing ingredients. I can continue to use it in-between shampoos without my hair becoming too greasy.
KJN1
Verified purchase
1found this helpful

Most helpful critical review

Mar 26, 2024

Made my hair FALL OUT. No joke.

Google "Olaplex hair loss, class action law suit" before you buy ANY Olaplex products. Absolutely destroyed my hair, then half of it fell out. Devastating.
Mircat
4found this helpful

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5 stars74%
4 stars8%
3 stars6%
2 stars4%
1 star7%

Pros:

Cons:

Mar 26, 2024

Made my hair FALL OUT. No joke.

Google "Olaplex hair loss, class action law suit" before you buy ANY Olaplex products. Absolutely destroyed my hair, then half of it fell out. Devastating.
Mircat
4found this helpful
Sept 6, 2022

Took time to like it

At first I thought it didn’t do anything and it was a waste of money. Now I notice a difference when I don’t use it. My hair feels and looks healthier. I did use a lot of the Olaplex products, but found Lolvaie products work much better. I use this with the Lolavie and my hair feels and looks great.
Mik949
TOP 250 REVIEWER
3found this helpful
Aug 22, 2024

This is my go-to hair serum

No fragrance with hair smoothing ingredients. I can continue to use it in-between shampoos without my hair becoming too greasy.
Verified purchase
KJN1
1found this helpful
Nov 1, 2026

Bad packaging

I like this product but the packaging is really bad. I have been using olaplex n6 for years and traveled with it everywhere. It has a similar packing to n9. I thought I could do the same with n9, after a short flight the bottle keeps leaking from the rim. Its such a waste of an expensive product. Maybe a got a faulty product but I'm disappointed with this product.
Reposted from OLAPLEX
BeaG
Oct 12, 2026

Best serum!

This serum is amazing! A little bit goes a long way. It makes my hair smooth and so soft. It is one of my favorite Olaplex products.
Reposted from OLAPLEX
HeatherC
Sept 30, 2026

Nice product

I like this gel, it’s done a good job with my hair so far!
Reposted from OLAPLEX
Annie4u
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