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OLAPLEX No. 9 Bond Protector Nourishing Hair Serum

Reviews For OLAPLEX No. 9 Bond Protector Nourishing Hair Serum

$30.00

Filtered by: Star Rating: 5 stars Clear Filters

47 Reviews
November 05, 2025

Nice product...

This is my second favorite leave in/styling product only second to no. 10. It is a decent curl gel and nice when I straighten. It leaves my hair shine and cuts the frizz. Sometimes I combine it with no. 6 or 5L if I need more moisure.

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ChristyCat

from California

Age Group: 50-59

Curly, Color treated hair

Combination Skin

Verified Purchase

0 people found this helpful

August 30, 2025

olaplex 9

This hair serum works well in taming my thin fly-away hair and makes styling very easy

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EPyer

from Tennessee

Age Group: 70-79

Straight, Color treated hair

Normal Skin

Verified Purchase

0 people found this helpful

July 26, 2025

Great improvement

I have long straight fine hair and this helps with the frizz and has definitely helped protect my hair and making it feel stronger.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

July 03, 2025

Heat protection

I am very happy with the results of this hair serum. It’s a great heat protectant and also really softens my hair when air drying. Great product.

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Rae

Verified Purchase

0 people found this helpful

June 08, 2025

This is the first in the Dream Team applications

This serum has replaced the serum (also amazing) that I was using. This serum helps remove tangles before I brush my hair, and smoothes my wet curls before I use my Olaplex Leave-in Conditioner (with a drop of Olaplex Oil). What a hair regimen!

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AWL

Verified Purchase

1 person found this helpful

April 12, 2025

A daily go-to

Previous to discovering Olaplex #9, I used #6. I like #9 even more! It's not heavy; a little goes a long way - and it protects against the heat.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

January 04, 2025

love!

I use this with the Olaplex Bond smoother and really like the results!

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LovelySkin Customer

Verified Purchase

0 people found this helpful

December 31, 2024

Pleasure to use

I have curly hair that can get frizzy. Just a small amount on damp hair keeps my hair in check. You don’t need much and it feels great!

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LovelySkin Customer

Verified Purchase

1 person found this helpful

November 25, 2024

Excellent product!

Love this product!

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Marisabel

Verified Purchase

0 people found this helpful

September 07, 2024

Light serum

I like using this serum, and would repurchase. I like all the Olaplex products I have tried, but this is the easiest to use. Just put onto hair and it absorbs nicely, and does not leave my very dry hair oily or sticky or crunchy. It is a nice scent like all the olaplex. It is not like a hair oil, and not like a thick conditioning balm type product. It is light and slightly nourishing.

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LDF

Verified Purchase

2 people found this helpful

June 20, 2024

Best hair serum

I use this hair serum after shampoo/ conditioner. This makes hair smooth. free from tangles. Also nice to apply on dry hair to give an extra moisture look.It doesn’t weigh down the hair and makes it manageable. As part of hair treatment regimen makes hair healthier and fuller.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

May 25, 2024

Great product

The No 9 leaves my hair shiny and soft.

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Meilee

Verified Purchase

1 person found this helpful

May 17, 2024

Must have for my dry thin hair

it really helps give me added strength for my hair.

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LovelySkin Customer

Verified Purchase

2 people found this helpful

May 02, 2024

Love it

This Olaplex is my new go-to styling product. It makes my hair smooth but not limp, and it doesn't have an oppressive scent.

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LovelySkin Customer

Verified Purchase

0 people found this helpful

April 27, 2024

Great Hair Serum!

I originally received this as a free gift with purchase. I have fine, thin hair and once I tried this I knew I would be purchasing it again. I use it after I towel dry my hair and it makes my hair feel stronger and more resilient to heat from the hair dryer and curling iron, which I only use occasionally.. This serum seems to strengthen my hair as well. I am very happy with this product and will continue to buy.

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LovelySkin Customer

Verified Purchase

1 person found this helpful

April 12, 2024

Love

This product protects my hair from heat & keeps frizz down & adds texture

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LovelySkin Customer

Verified Purchase

1 person found this helpful

April 02, 2024

My favorite hair product

I love this product. Makes my hair silky smooth even when humid outside. Definitely my go to

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Zumba78

Verified Purchase

0 people found this helpful

February 29, 2024

Definitely helps!

My shoulder length hair is baby-fine but a bit thin and tends to be fly-away in the winter. Working No. 9 into the ends, or mixing it with No. 6 and massaging it from root to ends, after washing helps smooth it out :-) It won't make your hair greasy unless you get heavy-handed. I'll definitely be keeping this in stock!

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LovelySkin Customer

Verified Purchase

1 person found this helpful

January 06, 2024

Heat protectant

Olaplex #9 says its a nourishing hair serum and heat protectant. It leaves hair smooth when applied to damp hair and let air dry. I add 2 drops of the bonding oil to #9 and apply.

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MarielaP

Verified Purchase

0 people found this helpful

December 31, 2023

Love Olaplex

My hair has never looked better since I started using multi Olaplex products. The No. 9 serum doesn't weigh my hair down and it keeps it protected when blow drying my hair. Highly recommend.

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Jamy8522

Verified Purchase

0 people found this helpful

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