SOLVENT
Isohexadecane
- solvent
A light, quickly evaporating carrier that spreads silicones and oils thinly, then leaves.
- products in our library
- 106
- of researched products
- 2%
- on the label, in our conditioners
- usually #10
- most common in
- Conditioner
- in water
- Volatile
At a glance
Four things worth knowing about how this ingredient behaves on hair.
How much of it is left on hair between washes.
What it takes to get it off the hair again.
How fast it leaves after the product is applied.
What is still on the hair once it has evaporated.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | None left behind | 1 of 5 |
| Rinse-out behaviour | Rinses clean | 5 of 5 |
| Drying speed | Steady | 2 of 5 |
| Residue | None | 1 of 5 |
What it does for a formula
What Isohexadecane does
The general function first, then how the role changes by product type where we have researched it.
What everything else is dissolved in before it reaches your hair.
Smooths the feel of the strand without adding hold or cleaning.
It carries the formula onto the hair and then leaves.
Charge
Charge is not recorded for this ingredient.
Solubility
Evaporates after application rather than staying on the hair, so it leaves nothing behind to remove.
Where it appears
Where it appears
One row per product category in our library: how many products list it, what share of that category that is, and where it typically sits on the label.
| Product type | How common | Typical position on label ? |
|---|---|---|
Conditioner
21 products
|
secondary · #10 | |
Heat protectant
12 products
|
leading · #3 | |
Finisher: oil
11 products
|
leading · #3 | |
Leave-in
10 products
|
supporting · #4 | |
Mask / treatment
10 products
|
supporting · #6 | |
Styler: curl cream
6 products
|
supporting · #5 | |
Styler: paste
6 products
|
supporting · #5 | |
Styler: smoothing cream
6 products
|
supporting · #6 | |
Finisher: anti frizz finish
5 products
|
leading · #3 | |
Finisher: serum
4 products
|
secondary · #11 |
7 more product types
| Product type | How common | Typical position on label ? |
|---|---|---|
Styler: hairspray
4 products
|
supporting · #6 | |
Finisher: shine spray
3 products
|
supporting · #4 | |
Scalp treatment
3 products
|
supporting · #6 | |
Styler: texture spray
2 products
|
supporting · #5 | |
Co-wash
1 product
|
supporting · #8 | |
Styler: lotion
1 product
|
leading · #3 | |
Styler: volumizer
1 product
|
supporting · #6 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Conditioner | 21 | 2% | 10 | 3 | secondary |
| Heat protectant | 12 | 6% | 3 | 1 | leading |
| Finisher: oil | 11 | 4% | 3 | 2 | leading |
| Leave-in | 10 | 1% | 4 | 2 | supporting |
| Mask / treatment | 10 | 2% | 6 | 3 | supporting |
| Styler: curl cream | 6 | 3% | 5 | 2 | supporting |
| Styler: paste | 6 | 3% | 5 | 3 | supporting |
| Styler: smoothing cream | 6 | 7% | 6 | 4 | supporting |
| Finisher: anti frizz finish | 5 | 16% | 3 | 2 | leading |
| Finisher: serum | 4 | 3% | 11 | 2 | secondary |
| Styler: hairspray | 4 | 2% | 6 | 4 | supporting |
| Finisher: shine spray | 3 | 3% | 4 | 4 | supporting |
| Scalp treatment | 3 | 1% | 6 | 5 | supporting |
| Styler: texture spray | 2 | 2% | 5 | 4 | supporting |
| Co-wash | 1 | 1% | 8 | 8 | supporting |
| Styler: lotion | 1 | 3% | 3 | 3 | leading |
| Styler: volumizer | 1 | 1% | 6 | 6 | supporting |
We have not researched differences by product type yet. The reading below comes from where it sits on the labels in our library.
Position footprint
Every listing in our library, by position on the label.
| Positions | Zone | Listings |
|---|---|---|
| 1-3 | Leading | 30 |
| 4-8 | Supporting | 49 |
| 9-15 | Secondary | 18 |
| 16-25 | Lower | 6 |
| 26+ | Trace | 3 |
How to read this
US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order.
So position tells you about relative amount only above that line, and we never convert a position into a percentage.
Who should pay attention
Formulation guidance for specific hair conditions, limited to the label positions where it applies. It is not a conclusion about any finished product, or about you.
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
Read from this ingredient’s chemical class. Where we have researched the ingredient itself, that reading replaces the class one.
Why it matters to shoppers
What seeing this ingredient tells you, what it does not, and the limits of our own method.
- a light, fast-drying formula
- a softer feel
- nothing left on the hair
- less frizz and easier combing
- an exact safety score (we do not publish one for any ingredient)
- how a finished product performs, which depends on the whole formula, not one line of it
- the exact percentage in a bottle, because label position never converts into a number
- a secondary solvent, listed below the main ingredients in our conditioners
- it was on the printed ingredient list of every product we counted (we read labels, not marketing copy)
- it is a carrier, not something left on the hair
- that a product is right or wrong for you
We do not publish safety scores or hazard grades. Where a regulator has published a restriction or a use condition, we state it and cite it; otherwise we describe what the ingredient does and stop.
Commonly paired with
The ingredients that most often appear alongside this one in our library. We leave out the near-universal ones, because they pair with everything and tell you nothing.
- Isododecane · 46
- Hexyl Cinnamal · 38
- Citronellol · 36
- Dimethicone · 35
- Tocopherol · 34
- Cetrimonium Chloride · 32
- Caprylyl Glycol · 30
- Benzyl Alcohol · 30
- Disodium EDTA · 29
- Helianthus Annuus (Sunflower) Seed Oil · 26
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to carry the formula and let it dry, give it a scent, and smooth the surface.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
Camille Rose · Heat protectant
Temp Tamer
#1 on the label · $3.18/oz
TGIN · Heat protectant
Miracle Styling 3-N-1 Heat Protectant Spray
#1 on the label · $3.75/oz
Bed Head · Heat protectant
A Glass Act Heat & UV Shield Oil
#2 on the label · $5.34/oz
BioSilk · Leave-in
Silk Therapy Gold Sparkling Silk Serum
#2 on the label · $5.14/oz
CHI · Finisher
Naturals With Aloe Vera Serum
#2 on the label · $8.00/oz
CHI · Heat protectant
Vibes "Know It All" Multitasking Hair Protector
#2 on the label · $6.00/oz
Living Proof · Finisher
frizz Vanishing Oil
#2 on the label · $21.18/oz
Living Proof · Finisher
No Frizz Vanishing Smooth Hair Oil
#2 on the label · $21.18/oz
Nexxus · Finisher
Repair & Nourish Ultra Lightweight Hair Oil
#2 on the label · $5.45/oz
Olaplex · Finisher
No.7 Bonding Hair Oil
#2 on the label · $31.68/oz
R+Co · Styler
TURNTABLE Curl Defining Crème
#2 on the label · $7.20/oz
Wella · Leave-in
Ultimate Repair Protective Leave-In
#2 on the label · $7.63/oz
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Isohexadecane
- emollient
- isohexadecane
For your hair?
Whether Isohexadecane matters for your hair depends on your hair.
106 products in our library list itWhat this ingredient does, and where it sits on the labels we have researched.
A verdict on any product that contains it, and never a safety grade.
We do not physically test your hair. Everything above comes from the ingredient lists in our library and from published references. The consultation is what turns it into a plan.
References
Seed entry, sourcing in progress Written from our reference work; primary sourcing is still being attached.
No published source is attached to this entry yet.
How this page was made
- Every number above is counted from the ingredient lists in our own product library: 106 of 6816 researched products list this ingredient. Nothing on this page is written per ingredient.
- The dots are levels, not scores. Each one comes from what kind of ingredient it is (its chemical class, charge and solubility) or from where it sits on the labels we have.
- US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order. Position tells you about relative amount only above that line, and we never convert a position into a percentage.
- The prominence bands (leading, supporting, secondary) are the same ones the product pages use to read a single label, applied here to the median position across a category.
- We do not publish safety scores or hazard grades. Where a regulator has published a restriction or a use condition, we state it and cite it; otherwise we describe what the ingredient does and stop.
- Identifiers and references appear only when a published source is attached to this entry. Without one, we leave the row out rather than fill it in.
- This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
- Entry last updated 2026-09-22. Product-page methodology: the product library.
