SEALANT
Petrolatum
- sealant
A heavy sealing agent that locks moisture in and takes detergent to remove.
- products in our library
- 56
- of researched products
- 1%
- on the label, in our styling pastes
- usually #4
- most common in
- Styler: paste
- in water
- Oil-soluble
At a glance
Four named levels, read from this ingredient’s chemical class, its charge, its solubility, or where it sits on the labels we have. More dots means more of the property named — never “better”.
How much of it is left on hair between washes.
What it takes to get it off the hair again.
Where the class sits between an ester and a butter.
How much it slows water leaving the strand.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Needs a cleanser | 4 of 5 |
| Rinse-out behaviour | Rinses with a cleanser | 2 of 5 |
| Weight | Light | 2 of 5 |
| Sealing | Strongest | 5 of 5 |
What it does for a formula
What Petrolatum does
The general function first, then how the role changes by product type where we have researched it.
Slows evaporation from the strand more than any other lipid class.
Smooths the feel of the strand without adding hold or cleaning.
It takes a surfactant to remove — worth knowing on a low-detergent routine.
Charge
Charge is not recorded for this ingredient.
Solubility
Needs a surfactant to remove. On a low-detergent routine it can build up over time.
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
26 products
|
supporting · #4 | |
Leave-in
7 products
|
supporting · #5 | |
Mask / treatment
5 products
|
supporting · #8 | |
Finisher: shine spray
4 products
|
supporting · #4 | |
Styler: curl cream
4 products
|
supporting · #5 | |
Styler: smoothing cream
4 products
|
leading · #2 | |
Styler: gel
2 products
|
supporting · #6 | |
Styler: mousse
2 products
|
supporting · #5 | |
Conditioner
1 product
|
secondary · #9 | |
Finisher: end oil
1 product
|
leading · #2 |
1 more product type
| Product type | How common | Typical position on label ? |
|---|---|---|
Finisher: oil
1 product
|
secondary · #9 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Styler: paste | 26 | 29% | 4 | 1 | supporting |
| Leave-in | 7 | 2% | 5 | 1 | supporting |
| Mask / treatment | 5 | 1% | 8 | 5 | supporting |
| Finisher: shine spray | 4 | 6% | 4 | 1 | supporting |
| Styler: curl cream | 4 | 4% | 5 | 2 | supporting |
| Styler: smoothing cream | 4 | 7% | 2 | 1 | leading |
| Styler: gel | 2 | 1% | 6 | 5 | supporting |
| Styler: mousse | 2 | 1% | 5 | 3 | supporting |
| Conditioner | 1 | 0% | 9 | 9 | secondary |
| Finisher: end oil | 1 | 11% | 2 | 2 | leading |
| Finisher: oil | 1 | 1% | 9 | 9 | secondary |
No product-type differences have been researched yet — the reading below is computed 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 | 25 |
| 4-8 | Supporting | 33 |
| 9-15 | Secondary | 7 |
| 16-25 | Lower | 1 |
| 26+ | Trace | 2 |
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
Conditional formulation guidance, scoped to a hair condition and to the positions where it is meaningful. It is not a conclusion about any finished product, and not a conclusion about you.
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
Forms a physical barrier on the strand that slows water leaving it. Nothing else in a formula holds moisture in as bluntly.
It does not disperse in water at all: removing it means a detergent wash, and until then it stays exactly where it landed.
Read where it is listed in the first three ingredients, positions 4–8 or the lower half of the ordered list.The heaviest surface layer in common use. Fine hair goes flat under it well before it goes smooth.
Read where it is listed in the first three ingredients or positions 4–8.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 this ingredient is evidence of, what it is not evidence of, and what our own method can and cannot tell you.
- a barrier that slows water loss
- a softer feel
- something that lasts through the day
- less frizz and easier combing
- an exact safety score — we do not publish one, for any ingredient
- how a finished product performs by itself — that is the whole formula, not one line of it
- the exact percentage in a bottle — label position never converts into a number
- a supporting occlusive alongside the main ingredients in our styling pastes
- it was on the label of every product we counted — we read printed ingredient lists, 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
Ingredients that appear alongside this one most often in our library. Near-universal ingredients are excluded — they pair with everything and tell you nothing.
- Propylene Glycol · 26
- Disodium EDTA · 22
- Benzyl Benzoate · 20
- Citronellol · 19
- Cetyl Alcohol · 19
- Beeswax · 18
- PVP · 18
- Dimethicone · 18
- VP/VA Copolymer · 16
- Coumarin · 16
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 it a scent.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
American Crew · Styler
Molding Clay
#1 on the label · $6.66/oz
Creme of Nature · Leave-in
Argan Oil Day&Night Hair&Scalp Conditioner
#1 on the label · $0.86/oz
Design Essentials · Finisher
Diamonds Oil Sheen Spray
#1 on the label · $1.24/oz
REUZEL · Styler
Green Grease Pomade Oil-Based Medium Hold
#1 on the label · $5.46/oz
REUZEL · Styler
Pink Grease Pomade Oil-Based Strong Hold
#1 on the label · $5.90/oz
REUZEL · Styler
Rosemary Mint Hydrating Styling Cream
#1 on the label · $4.72/oz
Sebastian · Styler
Craft Clay Texturizing & Flexible Styling Clay
#1 on the label · $13.53/oz
American Crew · Styler
Forming Cream
#2 on the label · $5.98/oz
Axe · Styler
Axe Styling Messy Look Medium Hold Low Shine Flexible Hair Paste
#2 on the label · $3.03/oz
Bumble and bumble · Styler
Grooming Hair Styling Cream
#2 on the label · $8.93/oz
Cantu · Finisher
Daily Oil Moisturizer
#2 on the label · $0.58/oz
Creme of Nature · Leave-in
Certified Natural Ingredients Mango & Shea Butter Ultra-Moisturizing Leave-In Conditioner
#2 on the label · $0.41/oz
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Petrolatum
- emollient
- mineral oil (paraffinum liquidum)
- petrolatum
For your hair?
Whether Petrolatum matters for your hair depends on your hair.
56 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 is read 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 — 56 of 3889 researched products list this ingredient. Nothing on this page is written per ingredient.
- The dots are named levels read from an ingredient’s chemical class, charge, solubility, or where it sits on the labels we have — never a score.
- 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; where none is, the row is simply absent rather than filled in.
- This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
- Entry last updated 2026-08-28. Product-page methodology: the product library.