EMULSIFIER
Peg-25 Hydrogenated Castor Oil
- emulsifier
An ethoxylated castor-oil derivative. It dissolves fragrance and oils into a water-based formula, which is what keeps a clear liquid from separating.
- products in our library
- 26
- of researched products
- 0.4%
- on the label, in our styling pastes
- usually #4
- most common in
- Styler: paste
- in water
- Water-soluble
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 much oil it strips, as a class.
The foam the class is known for, not a measured volume.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Low | 1 of 5 |
| Rinse-out behaviour | Rinses clean | 5 of 5 |
| Cleansing strength | Not a cleanser | 1 of 5 |
| Lather | Little | 1 of 5 |
What it does for a formula
What Peg-25 Hydrogenated Castor Oil does
The general function first, then how the role changes by product type where we have researched it.
How a clear liquid can carry an oil or a fragrance without going cloudy.
Without one, a cream separates in the bottle.
Water alone removes it, so it does not accumulate between washes.
Hair neither pulls it in nor pushes it away.
Charge
Carries no charge, so it neither clings to hair nor is pushed away by it. Nonionic ingredients are the mild, pH-tolerant workhorses of a formula.
Solubility
Rinses out with water alone, so it does not build up on hair between washes.
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: paste
12 products
|
supporting · #4 | |
Styler: edge control
5 products
|
supporting · #8 | |
Styler: gel
3 products
|
supporting · #4 | |
Finisher: oil
1 product
|
supporting · #6 | |
Mask / treatment
1 product
|
leading · #2 | |
Styler: hairspray
1 product
|
secondary · #17 | |
Styler: smoothing cream
1 product
|
secondary · #13 | |
Styler: texture spray
1 product
|
secondary · #32 | |
Styler: volumizer
1 product
|
supporting · #5 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Styler: paste | 12 | 6% | 4 | 2 | supporting |
| Styler: edge control | 5 | 13% | 8 | 7 | supporting |
| Styler: gel | 3 | 1% | 4 | 3 | supporting |
| Finisher: oil | 1 | 0% | 6 | 6 | supporting |
| Mask / treatment | 1 | 0% | 2 | 2 | leading |
| Styler: hairspray | 1 | 0% | 17 | 17 | secondary |
| Styler: smoothing cream | 1 | 1% | 13 | 13 | secondary |
| Styler: texture spray | 1 | 1% | 32 | 32 | secondary |
| Styler: volumizer | 1 | 1% | 5 | 5 | 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 | 8 |
| 4-8 | Supporting | 11 |
| 9-15 | Secondary | 5 |
| 16-25 | Lower | 1 |
| 26+ | Trace | 1 |
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.
- a clear formula that still carries oils
- a stable cream that does not separate
- a rinse-clean feel
- 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 supporting solubiliser alongside the main ingredients in our styling pastes
- it was on the printed ingredient list of every product we counted (we read labels, not marketing copy)
- 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.
- Propylene Glycol · 13
- Ethylhexylglycerin · 12
- Ceteareth-25 · 11
- Geraniol · 10
- Caprylyl Glycol · 10
- PVP · 9
- Citral · 9
- Citronellol · 9
- PEG-7 Glyceryl Cocoate · 8
- Sorbic Acid · 8
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, soften the strand, and clean and build foam.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
American Crew · Styler
Pomade - 3.0 oz
#2 on the label · $8.83/oz
Aveda · Styler
Pure-Formance™ Men Pomade
#2 on the label · $13.60/oz
Equate · Styler
Men Pomade
#2 on the label · $1.64/oz
Paul Mitchell · Styler
Tea Tree Grooming Pomade
#2 on the label · $9.00/oz
R+Co · Mask / treatment
GEMSTONE Color Protect Masque
#2 on the label · $6.84/oz
Aveda · Styler
brilliant™ humectant pomade
#3 on the label · $13.46/oz
Aveda · Styler
control paste™ for texture and pliable hold
#3 on the label · $14.40/oz
Bumble and bumble · Styler
Curl Hair Gel + Pomade
#3 on the label · $10.88/oz
R+Co · Styler
CONTROL Flexible Paste
#4 on the label · $15.46/oz
Taliah Waajid · Styler
Green Apple & Aloe Nutrition Miracle Hold Gel
#4 on the label · $1.00/oz
Cantu · Styler
Protective Styles Braiding & Twisting Gel
#5 on the label · $1.02/oz
IGK · Styler
Big Time Volume Mousse
#5 on the label · $5.48/oz
See all 26 products in the library that list Peg-25 Hydrogenated Castor Oil
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Peg-25 Hydrogenated Castor Oil
- solubilizer
- peg-25 hydrogenated castor oil
For your hair?
Whether Peg-25 Hydrogenated Castor Oil matters for your hair depends on your hair.
26 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: 26 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.
