No.7 Bonding Hair Oil
Finisher / Hair oil, glossing
- Finisher
- oil
- Sulfate-free
- Protein-free
- Moisture-rich
- Vegan · label states
Scent:
The ingredient list declares fragrance. What it smells of is not stated, and we do not guess.
Manufacturer page: olaplex.com
Personal fit
Is this right for you?
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Show all 22 factors we check
The rest of what your plan weighs on this product.
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Your avoid-list
Same job for less elsewhere
$30.84/oz at 1 oz — more than 95% of the 169 hair oils , which mostly run $4.50–16.47/oz.
Great for
Maybe skip if
What the formula actually does
Read from the label, not the marketing
Each row says where it comes from: F means we derived it from this product’s own ingredient list, S means it is a claim the brand makes that the formula neither confirms nor contradicts.
A silicone or oil blend does the shine work here.
Middle of the range — noticeable on fine hair, light on coarse hair.
Oils sit high in the list — a softening, coating formula.
Water-insoluble silicones or waxes: a detergent wash is what removes them.
No fast-drying alcohol in the list.
Fragrance is listed; it sits below the working ingredients.
Ingredients that matter
The ingredients that change a decision
The workhorse ingredients plus anything lower down that changes a decision. These chips name what an ingredient does — they are not safety scores, and no ingredient here is rated good or bad on its own.
| Ingredient | What it does | Why it matters | Chip |
|---|---|---|---|
| Dimethicone | silicone | The shine system | Buildup |
| Isohexadecane | solvent | The base everything else is dissolved in | Shine |
| C13-14 Isoparaffin | emollient | Softens and smooths the strand | Shine |
| Coco-Caprylate/CaprateCoco-Caprylate | light ester | Light slip without much weight | Shine |
| Phenyl Trimethicone | silicone | The shine system | Buildup |
| Bis-Aminopropyl Diglycol Dimaleate | conditioning agent | Reduces combing force | Detangles |
| Propanediol | humectant | Pulls water into the hair | Moisturizes |
| Zea Mays (Corn) Oil | oil | The shine and softening system | Shine |
| FragranceFragrance (Parfum) | fragrance | The scent | Fragrance |
| Hexyl Cinnamal | fragrance | The scent | Fragrance |
| Limonene | fragrance | The scent | Fragrance |
| Citral | fragrance | The scent | Fragrance |
Full ingredient list (20)
US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order. Annotations keep three readings separate: the ingredient's general function, its role in this product type, and what its position can support.
-
1
Dimethicone
General function
The most common conditioning silicone. It coats the strand for shine, slip, and frizz control, and needs a detergent (not just water) to wash out.
Role in this product typeIn a finishing oil, dimethicone spreads as a smooth, low-friction layer over the hair surface. It improves slip, reduces flyaways, and creates a glossier finish.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
DowMay suitClimate-sensitive or frizz-prone hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFrizz-prone, damaged, or high-friction hairMay suit frizz-prone, damaged, or high-friction hair that benefits from surface smoothing and added slip.
DependsBuild-up-sensitive routinesConsider cleansing habits: dimethicone is not water-soluble, so repeated use may leave more deposited film than a low-detergent routine removes.
- silicone
- emollient
- conditioning agent
-
2
Isohexadecane
General function
A light, quickly evaporating carrier that spreads silicones and oils thinly, then leaves.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
May suitFrizz-prone, damaged, or high-friction hairEmollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
- solvent
- emollient
-
3
C13-14 Isoparaffin
General function
A light carrier used to spread silicones and polymers thinly.
Leading ingredientListed in the first three ingredients, it is likely a structural part of this formula.
May suitFrizz-prone, damaged, or high-friction hairEmollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
- emollient
- solvent
-
4
Coco-Caprylate/Caprate
· Coco-Caprylate
General function
A plant-derived light ester used where a silicone-free but silky feel is wanted.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitFine or easily flattened hairA light emollient: it softens the surface with noticeably less weight than an oil or a butter.
May suitFrizz-prone, damaged, or high-friction hairSpreads thin and lowers friction between strands without the heaviness of a fixed oil.
- light ester
- emollient
-
5
Phenyl Trimethicone
General function
A high-refractive silicone used specifically for visible shine in serums and finishing oils.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitClimate-sensitive or frizz-prone hairA surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
May suitFrizz-prone, damaged, or high-friction hairLays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.
May not suitBuild-up-sensitive routinesDimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.
- silicone
- emollient
-
6
Bis-Aminopropyl Diglycol Dimaleate
General function
A bond-repair ingredient that reacts with sulfur groups in the hair. It is the active in one of the widely marketed bond-building systems.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
May suitFrizz-prone, damaged, or high-friction hairDeposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.
- conditioning agent
-
7
Propanediol
General function
A corn-derived humectant and solvent, often chosen as a lighter-feeling alternative to propylene glycol.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
PubChemMay suitFine or easily flattened hairLight and water-binding rather than oily, so it hydrates without contributing weight.
May suitVery dry or highly damaged hairA small water-binding solvent. It holds moisture and helps the rest of the formula spread evenly over the strand.
DependsClimate-sensitive or frizz-prone hairA humectant follows the air: it holds water in humid conditions and can give it up in very dry ones. Climate decides what it does more than the label does.
- humectant
- solvent
-
8
Zea Mays (Corn) Oil
General function
The oil pressed from Corn (Zea Mays). How much weight a plant oil leaves depends on the hair it lands on; coarse hair tends to take more of it than fine hair.
Supporting ingredientListed in positions 4–8, it likely makes a meaningful contribution alongside the formula's main ingredients.
- oil
- emollient
- ▾Below about this point, order stops being meaningful — these are typically used at 1% or less.
-
9
Beta-Carotene
General function
A plant pigment used as an antioxidant; it also tints the product orange.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitGray, silver, or brass-prone hairA violet or blue colorant sits opposite yellow on the colour wheel, so a trace of it deposited on the surface makes a warm cast read cooler. It washes out over the following few washes.
- antioxidant
- colourant
-
10
Helianthus Annuus (Sunflower) Seed Oil
General function
A light, widely used oil that softens without much weight.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
International Journal of TrichologyMay suitDry, coarse, or high-porosity hairCoats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.
May suitFrizz-prone, damaged, or high-friction hairA thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.
- oil
- emollient
-
11
Punica Granatum Seed Oil
General function
The oil pressed from Punica Granatum. How much weight a plant oil leaves depends on the hair it lands on; coarse hair tends to take more of it than fine hair.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May suitDry, coarse, or high-porosity hairCoats the surface and slows water leaving the strand, which is usually what coarse hair that dries out fast is missing.
May suitFrizz-prone, damaged, or high-friction hairA thin oil layer lowers friction between strands and flattens the raised cuticle that scatters light and catches on its neighbours.
- oil
- emollient
-
12
Water
· Water (Aqua)
- solvent
-
13
Morinda Citrifolia Fruit Powder
- botanical extract
-
14
Fragrance
· Fragrance (Parfum)
General function
An undisclosed blend of scent ingredients. Regulations let it stay unlisted, so a fragrance-free product is the only way to be certain what is not in it.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
May not suitFragrance-sensitive routinesDeclared fragrance. On a fragrance-sensitive routine this is the line that decides it, wherever it sits on the label.
- fragrance
- declared fragrance
-
15
Hexyl Cinnamal
General function
A jasmine-like fragrance component named separately as a recognised allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
16
Limonene
General function
A citrus-smelling fragrance component that EU rules require to be named separately because some people react to it.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
17
Tocopherol
- antioxidant
- vitamin
-
18
Citral
General function
A lemon-scented fragrance component listed separately as a recognised allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
19
Linalool
General function
A floral fragrance component listed separately as a recognised contact allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
-
20
Citronellol
General function
A rose-like fragrance component named separately as a recognised allergen.
Estimated lower-concentration zoneIt appears around or below the estimated 1% line, where label order no longer indicates relative amount; its role may be minor or technical.
PubChemMay not suitFragrance-sensitive routinesOne of the 26 scent components the EU requires to be named individually above a threshold. It is named because it is a known contact allergen, not because it is unusual.
- fragrance
- named fragrance allergen
What the whole list adds up to
- 8 emollients
- 6 fragrances
- 5 named fragrance allergens
- 4 solvents
- 3 oils
- 2 silicones
- 2 conditioning agents
- 2 antioxidants
- 1 light ester
- 1 humectant
- 1 colourant
- 1 botanical extract
- 1 declared fragrance
- 1 vitamin
Ingredient list captured 2026-08-27. Formulas change — check the package in your hand when an ingredient matters to you.
Price · 1 oz
Priced above the products that do the same job. Stores sell it above the $7 line; products that do this job typically go for about $10 at this size.
Show the price ladder
Where we’ve seen it3 listings · 3 stores
-
Target
$29.991 oz · $29.99/ozSep 5Lowest per ozSale · was $32.00
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OLAPLEX
$32.001.01 oz · $31.68/ozSep 5
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Brand website
$32.001 oz · $32.00/ozAug 27
Sorted by price per ounce. Dated observations from our research, not live prices. Direct store pages, no affiliate links. We don’t sell this product.
How we work this out
- 1 oz is the size stores list most often; every comparison on this page is made at it. Other sizes are shown in the Sizes row and the store list.
- Seen at $29.99 is the price we have observed for the 1 oz. We need three stores before we call a price commonly seen.
- Good value under $7 comes from the 8 products we score as doing the same job as this one. A quarter of them cost less than $7.11/oz; at 1 oz that is $7. Under that line you are paying less than most of them.
- About $10 is what those same products typically cost at this size — the midpoint of their prices per ounce, scaled to 1 oz.
Formula
The formula carries what a hair oil is built around, and 8 products we score as close matches cost at least a quarter less per ounce. The difference is buying the label, not a different formula.
How the score is counted
- 8 products we score as doing the same job cost less per ounce
- Costs more per ounce than 95% of the 169 hair oils we’ve priced
- Covers 6 of the 6 things a hair oil should do
- Salon tier, sold at Brand website and Ulta
- A shine systemThe silicone, oil, or ester that produces gloss.3 pts
- A weightless carrierDelivers the shine without leaving grease.2 pts
- Oils or butters in the working zoneSoftens the strand rather than just coating it.2 pts
- An antioxidantKeeps the oils in the bottle from going off.1 pt
- No drying alcohol in the first threeFast drying without leading on alcohol.1 pt
- Fragrance kept out of the top eightScent as a finishing touch, not a major share.1 pt
The formula score is completeness for the job: the share of the systems this product type is normally built around that we can find in this list, weighted. It is not efficacy, not quality, and it never compares across product types.
Does the same job, for less
Same derived functions — what it cleans, conditions, coats or holds — at a lower cost per ounce. Scent, texture and where you buy it can still differ.
- Protein-free
- Shine
- Humidity
- Differs
- Protein-free
- Shine
- Alcohol-free
- Differs
- Shine
- Alcohol-free
- No aerosol
- Function
- Also
See more alternatives in the product library
These are functional neighbours, not personal recommendations — they are close on formula, not chosen for anyone. Get the one that fits your hair, routine, and budget
Final decision
Should you buy it?
Good for the right person, not the lowest costHair that stiffens on protein who want a protein-free formula and moisture that stays in
Not ideal for anyone sensitive to fragrance, curly-method routines, or people shopping on a budget
We do not sell products or take placement fees. This page states what the formula and the prices show; the consultation is what matches it to a person.
Reviewers
What people report
Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings.
Lightweight formula requires only a small amount per application to achieve visible results.
Effective frizz reduction and smoothing across all hair types with long frizz control.
Provides visible heat protection while delivering shine and leaving hair stronger healthier looking.
Product has pleasant fragrance that reviewers describe as fabulous and enhances experience.
Oil delivers dramatic shine improvement making hair shiny and glossy without appearing greasy.
More from OLAPLEX
How this page was made
- Everything above is generated from our researched product record — identity, the ingredient list as printed, the brand's own claims, dated price observations, and review themes written in our researchers' own words. No part of this page is written per product.
- The value band is a fixed label over two stored numbers: this product’s cost per ounce as a percentile of every product of this type we have priced, each at the size it is most often sold in, and how many products we score as doing the same job cost at least a quarter less per ounce.
- Both scores out of ten are defined on this page. The formula score is completeness for the job, computed from a fixed per-format checklist shown beneath the gauge; the price score is cost per ounce against every product of this type we have priced.
- The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
- 3 sources consulted for this product (1 manufacturer or regulatory, 1 retailer, 1 editorial), last checked 2026-09-05.
- Ingredient references are linked for 8 of 16 product-aware annotations on this page. Fit notes are conditional formulation guidance, not a conclusion about the finished product or about you.
- We have not tested this product in a lab and we do not physically test your hair. Formula readings come from the ingredient list; behaviour claims are labelled as the brand's.
- Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice.
- Ingredient names link to our ingredient library, where each entry shows what it does, which product types use it, and where it usually sits on a label across everything we have researched.
- This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
- Formula readings: derivation v22. Record last updated 2026-09-05.