CONDITIONING AGENT
Allantoin
- conditioning agent
A soothing ingredient used in scalp formulas.
- products in our library
- 35
- of researched products
- 0.9%
- on the label, in our shampoos
- usually #25
- most common in
- Shampoo
- in water
- Water-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.
Whether hair pulls it in or pushes it away — read from charge.
How much easier it makes a comb pass.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Low | 1 of 5 |
| Rinse-out behaviour | Rinses clean | 5 of 5 |
| Adhesion | Not recorded | not recorded |
| Slip | Some | 2 of 5 |
What it does for a formula
What Allantoin does
The general function first, then how the role changes by product type where we have researched it.
Included for feel and detangling rather than for cleaning or structure.
Water alone removes it, so it does not accumulate between washes.
Charge
Charge is not recorded for this ingredient.
Solubility
Rinses out with water alone — it does not accumulate 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 ? |
|---|---|---|
Shampoo
13 products
|
secondary · #25 | |
Conditioner
7 products
|
secondary · #25 | |
Leave-in
4 products
|
secondary · #20 | |
Mask / treatment
3 products
|
secondary · #41 | |
Styler: gel
3 products
|
secondary · #10 | |
Scalp treatment
2 products
|
secondary · #22 | |
Co-wash
1 product
|
secondary · #15 | |
Styler: hairspray
1 product
|
secondary · #20 | |
Styler: mousse
1 product
|
secondary · #13 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Shampoo | 13 | 2% | 25 | 7 | secondary |
| Conditioner | 7 | 1% | 25 | 19 | secondary |
| Leave-in | 4 | 1% | 20 | 16 | secondary |
| Mask / treatment | 3 | 1% | 41 | 25 | secondary |
| Styler: gel | 3 | 2% | 10 | 6 | secondary |
| Scalp treatment | 2 | 1% | 22 | 20 | secondary |
| Co-wash | 1 | 1% | 15 | 15 | secondary |
| Styler: hairspray | 1 | 1% | 20 | 20 | secondary |
| Styler: mousse | 1 | 1% | 13 | 13 | 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 | 0 |
| 4-8 | Supporting | 3 |
| 9-15 | Secondary | 10 |
| 16-25 | Lower | 17 |
| 26+ | Trace | 13 |
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.
Deposits a lubricating layer that makes combing easier, which is most of what stops mechanical damage adding to frizz.
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.
- easier combing
- a rinse-clean feel
- 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 secondary conditioning agent, listed below the main ingredients in our shampoos
- 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.
- Aloe Barbadensis Leaf Juice · 17
- Cocamidopropyl Betaine · 15
- Propylene Glycol · 13
- Tocopherol · 13
- Sodium PCA · 11
- Helianthus Annuus (Sunflower) Seed Oil · 11
- Lecithin · 10
- Lactic Acid · 10
- Benzyl Alcohol · 10
- Xanthan Gum · 9
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to give the formula body and hold, clean and build foam, and carry the formula and let it dry.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
American Crew · Styler
Medium Hold Spray Gel
#6 on the label · $2.50/oz
Mixed Chicks · Styler
Castor Oil Curly Styling Gel
#6 on the label · $1.10/oz
MopTop · Shampoo
Detox Shampoo
#7 on the label · $3.00/oz
Oribe · Scalp treatment
Serene Scalp Densifying Treatment Spray
#9 on the label · $18.10/oz
American Crew · Styler
American Crew Firm Hold Styling Gel
#10 on the label · $1.99/oz
American Crew · Styler
Light Hold Styling Gel - 13.1 oz
#10 on the label · $1.87/oz
Malibu C · Shampoo
Hydrate Color Wellness Shampoo
#10 on the label · $3.00/oz
Wella Professionals · Shampoo
Oil Reflections Luminous Reveal Shampoo
#11 on the label · $1.15/oz
Wella Professionals · Shampoo
Ultimate Color Sulfate-Free Shampoo
#12 on the label · $3.20/oz
Nizoral · Scalp treatment
Pre-Shampoo Scalp Build-Up Remover
#13 on the label · $2.40/oz
SoCozy · Styler
Kids Sensitive Hair Style Foam
#13 on the label · $1.67/oz
Innersense Organic Beauty · Scalp treatment
True Enlightenment Scalp Scrub
#14 on the label · $6.27/oz
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Allantoin
- allantoin
For your hair?
Whether Allantoin matters for your hair depends on your hair.
35 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 — 35 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.