PROPELLANT
Hydrofluorocarbon 152a
- propellant
A non-flammable aerosol propellant used in dry shampoos and finishing sprays.
- products in our library
- 363
- of researched products
- 5%
- on the label, in our styling hairsprays
- usually #2
- most common in
- Styler: hairspray
- 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 | Flashes off | 5 of 5 |
| Residue | None | 1 of 5 |
What it does for a formula
What Hydrofluorocarbon 152a does
The general function first, then how the role changes by product type where we have researched it.
A liquefied gas that evaporates on contact and leaves nothing behind.
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 ? |
|---|---|---|
Styler: hairspray
147 products
|
leading · #2 | |
Dry shampoo
69 products
|
leading · #1 | |
Styler: texture spray
38 products
|
leading · #1 | |
Finisher: shine spray
31 products
|
leading · #1 | |
Styler: volumizer
23 products
|
leading · #1 | |
Styler: mousse
18 products
|
leading · #3 | |
Heat protectant
17 products
|
leading · #2 | |
Shampoo
10 products
|
leading · #1 | |
Styler: smoothing cream
5 products
|
leading · #1 | |
Styler: paste
3 products
|
leading · #1 |
2 more product types
| Product type | How common | Typical position on label ? |
|---|---|---|
Conditioner
1 product
|
leading · #1 | |
Finisher: oil
1 product
|
leading · #1 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Styler: hairspray | 147 | 60% | 2 | 1 | leading |
| Dry shampoo | 69 | 53% | 1 | 1 | leading |
| Styler: texture spray | 38 | 39% | 1 | 1 | leading |
| Finisher: shine spray | 31 | 30% | 1 | 1 | leading |
| Styler: volumizer | 23 | 16% | 1 | 1 | leading |
| Styler: mousse | 18 | 9% | 3 | 2 | leading |
| Heat protectant | 17 | 8% | 2 | 1 | leading |
| Shampoo | 10 | 1% | 1 | 1 | leading |
| Styler: smoothing cream | 5 | 6% | 1 | 1 | leading |
| Styler: paste | 3 | 2% | 1 | 1 | leading |
| Conditioner | 1 | 0% | 1 | 1 | leading |
| Finisher: oil | 1 | 0% | 1 | 1 | leading |
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 | 354 |
| 4-8 | Supporting | 8 |
| 9-15 | Secondary | 1 |
| 16-25 | Lower | 0 |
| 26+ | Trace | 0 |
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.
Why it matters to shoppers
What seeing this ingredient tells you, what it does not, and the limits of our own method.
- an aerosol format
- nothing left on the hair
- 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 primary propellant near the top of the ingredient list in our styling hairsprays
- 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.
- Alcohol Denat. · 333
- Aminomethyl Propanol · 164
- Octylacrylamide/Acrylates/Butylaminoethyl Methacrylate Copolymer · 116
- Hexyl Cinnamal · 105
- Butane · 98
- Citronellol · 95
- Isobutane · 94
- VP/VA Copolymer · 83
- Benzyl Salicylate · 78
- Triethyl Citrate · 77
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, keep the formula stable, and give the formula body and hold.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
AG Care · Styler
Tousled Texture Body & Shine Finishing Spray
#1 on the label · $5.00/oz
amika · Styler
Fluxus Touchable Flexible Hold Hairspray
#1 on the label · $3.17/oz
amika · Styler
Headstrong Intense Hold Hairspray
#1 on the label · $3.65/oz
amika · Dry shampoo
Perk Up Dry Shampoo
#1 on the label · $5.47/oz
amika · Dry shampoo
Perk Up Guava Granita Dry Shampoo, Ellis Brooklyn Limited Edition
#1 on the label · $5.47/oz
amika · Dry shampoo
Perk Up Plus Extended Clean Dry Shampoo
#1 on the label · $5.85/oz
amika · Dry shampoo
Perk Up Ultra Oil Control Dry Shampoo
#1 on the label · $5.85/oz
amika · Styler
Rising Star Volumizing Finishing Spray
#1 on the label · $5.66/oz
amika · Styler
un.done Volume and Matte Texture Spray
#1 on the label · $5.66/oz
Aveda · Styler
Tousle Texture Dry Texture Spray
#1 on the label · $10.28/oz
Beachwaver Co. · Dry shampoo
Second Chance Dry Shampoo
#1 on the label · $6.76/oz
Bumble and bumble · Styler
Thickening Dryspun Texture Spray - 3.6 oz
#1 on the label · $10.28/oz
See all 363 products in the library that list Hydrofluorocarbon 152a
Identity
What this entry is, and what our references call it.
Hydrofluorocarbon 152a
- CAS 75-37-6
- PubChem 6368
- difluoroethane (r-152a)
- hydrofluorocarbon 152-a
- hydrofluorocarbon 152a
- hydrofluorocarbon-152a
- hydrofluorocarbon152a
For your hair?
Whether Hydrofluorocarbon 152a matters for your hair depends on your hair.
the 9th most-listed solvent or propellant in our libraryWhat 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
Sourced Backed by a manufacturer or regulatory source.
This ingredient
- Manufacturer or regulatory PubChem : Compound identity: CID 6368, CAS 75-37-6, C2H4F2 · accessed 2026-08-28
How this page was made
- Every number above is counted from the ingredient lists in our own product library: 363 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.
