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Is Olaplex No. 7 Bonding Oil Worth It?

An honest, unbiased review of the hair care product that's been referred to as "liquid gold in a bottle." Is it worth the hype or overhyped? Let's get into it.

I recently underwent a major hair transformation. I went from almost black Asian hair to a -- let's call it, "blonde adjacent" -- shade.

It can look red, orange, brown or blonde. It all depends on the lighting conditions I happen to be in. You'll see what I mean in the photos below. Eagerly awaiting a color correction.

In any case, a lot of bleach was involved. And as we all know, bleach + hair = damage. So I found myself on the market for some hair oil to add to my growing artillery of hair repair products to nurse my beloved hair back to health.

After doing some research, I decided to try the Olaplex No. 7 Bonding Hair Oil.

I've been using it for about 3 weeks now. These are my thoughts on this product so far.

What it's designed to do

According to Olaplex, this product is designed to:

  • Boost shine

  • Strengthen and repair

  • Reduce frizz and flyaways

  • Extend color and renew vibrancy

  • Heat protect up to 450°F

  • Shorten drying time

  • Soften and detangle

  • Leave no residue

It's also:

  • For all hair types

  • Color safe

  • Vegan

Ingredients list

Dimethicone, Isohexadecane, C13-14 Isoparaffin, Coco-Caprylate, Phenyl Trimethicone, Bis-Aminopropyl Diglycol Dimaleate, Propanediol, Zea Mays (Corn) Oil, Beta-Carotene, Helianthus Annuus (Sunflower) Seed Oil, Moringa Oleifera Seed Oil, Punica Granatum Seed Oil, Water (Aqua), Morinda Citrifolia Fruit Powder, Fragrance (Parfum), Hexyl Cinnamal, Eclipta Prostrata Extract, Ethylhexyl Methoxycinnamate, Limonene, Tocopherol, Citral, Linalool, Melia Azadirachta Leaf Extract, Citronellol, Pseudozyma Epicola/Camellia Sinensis Seed (Green Tea) Oil Ferment Extract Filtrate.

Notable ingredients

Olaplex's Patented Technology (bis-aminopropyl diglycol dimaleate): Repairs hair by cross linking broken bonds damaged by chemical, thermal and mechanical processes.

Silicone Warning: The first ingredient (meaning the ingredient there is the most of, proportionally) is dimethicone. This is a type of silicone. If you avoid products containing silicone, this product is not for you.


The consistency of this oil is light and smooth. It feels silky and velvety to the touch (probably because of the added silicone). It's not one of those super thick, heavy oils -- it has more of a watery consistency.


This product has a very light scent that's almost imperceptible. To me, it smells kind of like vegetable oil with a subtle hint of citrus, and maybe flowers. I do not notice a lingering scent on my hair when I use this hair oil.

Weight and feel

This hair oil is super lightweight and doesn't leave my hair feeling greasy like some other oils do. Even when I apply a lot of product, it still feels weightless and does not leave a residue. In love.

How to use

Instructions: Apply a small amount of oil to damp or dry hair, then style as desired.

How I apply this oil depends on whether or not I'm using a leave-in hair mask (K18) that day.

If I am using the mask, I apply the oil after the mask, onto semi-dry hair while blow drying. If I am not using the mask, I apply the oil to damp hair, then blow dry.

What I like about this product

It cuts down blow drying time. Significantly.

For those of us with a lot of hair, this is a BFD.

It tames flyaways.

It smooths.

It adds shine.

It adds depth, dimension and vibrancy to my hair color.

Proof: before and after photos

What I don't like about this product

I have mixed feelings about the fact that this product contains silicone.

Also, it's a bit pricey for the amount of product you get. At the time of writing this post, it costs $30 USD for 30 ml (1 oz).

Is it outrageously pricey? No.

It's certainly not as pricey as this one.

But it's also not as affordable as this one.

That said, hair oil isn't the type of product you use a lot of in one go (even if you have super long, waist-length hair like me), so the bottle will probably last you a long time.

Product rating

Overall rating: 8 / 10 Improvement in hair texture (smoothness, softness): 9 / 10 Improvement in hair appearance (shininess, frizz): 7 / 10

Product review


The main reason I like this product is because my hair feels noticeably softer when I use this oil.

However, part of the reason this oil leaves my hair feeling so much smoother is because of the silicone it contains, meaning the improved smoothness is a temporary effect of having the product in my hair, as opposed to my hair actually being healthier.

Even though the effect is temporary, I still appreciate how much softer my hair feels when I use this oil.


As far as the appearance of my hair, I don't notice a significant difference when I use this oil. I was wondering if it was just me or if there was objectively no discernible difference, so one day when I was shopping at a Sephora with a friend, I performed an impromptu blind hair oil test.

While my friend was perusing the makeup section, I made my way over to the hair product section and I applied a healthy amount of the Olaplex oil on only the left side of my hair, leaving the right side of my hair bare. Then I walked over to my friend and asked her if she noticed a difference between the left and right sides of my hair.

She looked from many different angles, having me turn this way and that. She even had me step into different kinds of lighting in the store. After several minutes of intense visual analysis, she finally answered, "No, I don't see a difference."

I then had her feel the left vs right sides of my hair and asked if she felt a difference. Without hesitation, she immediately answered that the left side felt smoother.

I know I administered this hair test on only one person so I can't really extrapolate any grand conclusions from it, but I also have direct photo evidence (posted above). Based on the information I've gathered thus far, I think it's safe to say that, at least on my hair in its current condition, this oil doesn't make a big difference in the way my hair looks.

That said, I will say I do notice a big difference in my flyaway situation (as evidenced in the photos above). So much better with the oil.

Hair health

I wish I could comment on this in a more meaningful way in this post, but I honestly can't -- for two reasons.

First, I've only been using this product for 3 weeks, which really isn't enough time to make a fair determination about this.

Second, I'm using a multitude of other hair repair products right now in addition to the hair oil (so I can get my hair healthy enough for a color correction), so it's hard for me to isolate which products are doing what.

Final verdict

Overall, I like this product. I recommend it if you have dry and damaged hair, as long as you're okay with using silicone containing products.

Will I repurchase? Probably not. But not because I'm not happy with the results. Because I'm a self-professed product junkie who loves testing new and different products.

I currently have my eye on the K18 Molecular Repair Hair Oil. I also have my eye on the Olaplex No. 9 serum.

Rest assured, no matter what hair repair product I end up testing next, I'll write up a review for you, so you're in the know about it, too.

Hope this review helps you on your hair journey, and you and your hair are happy and healthy!


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