FILM FORMER
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
- film former
A synthetic film-forming polymer. Polymers of this kind dry to a continuous film on the hair, which is how a styling product holds a shape.
- products in our library
- 3
- of researched products
- 0.1%
- on the label, in our serums
- usually #6
- most common in
- Finisher: serum
- in water
- Water-dispersible
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.
What the polymer class can do, not what any bottle claims.
How well the film survives damp air, as a class.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Low | 2 of 5 |
| Rinse-out behaviour | Rinses with shampoo | 4 of 5 |
| Hold | Firmest | 5 of 5 |
| Humidity resistance | Holds up | 4 of 5 |
What it does for a formula
What Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer does
The general function first, then how the role changes by product type where we have researched it.
The film is what holds a shape once the water has gone.
How firmly depends on the polymer class and how much of it is used.
A long-chain molecule that stays behind as the product dries.
It does not truly dissolve, and ordinary shampooing removes it.
Charge
Charge is not recorded for this ingredient.
Solubility
Spreads through water without truly dissolving, and normal shampooing removes it.
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 ? |
|---|---|---|
Finisher: serum
1 product
|
supporting · #6 | |
Leave-in
1 product
|
secondary · #10 | |
Scalp treatment
1 product
|
leading · #2 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Finisher: serum | 1 | 1% | 6 | 6 | supporting |
| Leave-in | 1 | 0% | 10 | 10 | secondary |
| Scalp treatment | 1 | 1% | 2 | 2 | leading |
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 | 1 |
| 4-8 | Supporting | 1 |
| 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 this ingredient is evidence of, what it is not evidence of, and what our own method can and cannot tell you.
- hold that survives humidity
- a style that holds
- a product ordinary shampooing removes
- 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 film former alongside the main ingredients in our serums
- it was on the label of every product we counted — we read printed ingredient lists, not marketing copy
- a stiff, crunchy result on its own
- 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.
- PEG-40 Hydrogenated Castor Oil · 2
- Betula Alba Leaf Extract · 1
- Hamamelis Virginiana (Witch Hazel) Water · 1
- Crambe Abyssinica Seed Oil Phytosterol Esters · 1
- Calcium Pantothenate · 1
- Isostearyl Alcohol · 1
- Ethoxydiglycol · 1
- Achillea Millefolium Extract · 1
- Hydrogenated Polydecene · 1
- Copernicia Cerifera (Carnauba) Wax · 1
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to clean and build foam, appear on the label as plant-derived ingredients, and soften the strand.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
- polymer
- sodium acrylate/ sodium acryloyldimethyl taurate copolymer
- sodium acrylate/sodium acryloyldimethyl taurate copolymer
For your hair?
Whether Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer matters for your hair depends on your hair.
3 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 — 3 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.