CONDITIONING AGENT
Aminopropyl Triethoxysilane
- conditioning agent
A silane that bonds to the hair surface, used in repair-positioned products to anchor a smoothing layer.
- products in our library
- 4
- of researched products
- 0.1%
- on the label, in our conditioners
- usually #5
- most common in
- Conditioner
- 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.
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 | 2 of 5 |
| Rinse-out behaviour | Rinses with shampoo | 4 of 5 |
| Adhesion | Not recorded | not recorded |
| Slip | Some | 2 of 5 |
What it does for a formula
What Aminopropyl Triethoxysilane 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.
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.
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 ? |
|---|---|---|
Conditioner
2 products
|
supporting · #5 | |
Mask / treatment
1 product
|
leading · #3 | |
Shampoo
1 product
|
secondary · #10 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Conditioner | 2 | 0% | 5 | 4 | supporting |
| Mask / treatment | 1 | 0% | 3 | 3 | leading |
| Shampoo | 1 | 0% | 10 | 10 | 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 | 2 |
| 4-8 | Supporting | 2 |
| 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.
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.
Film formers are what hold a style: they dry into a connected film across the strands so the shape resists movement.
How rigid the finish is depends on which polymer it is and what the formula pairs with it, not on there being one.
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 style that holds
- a product ordinary shampooing removes
- 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 conditioning agent alongside the main ingredients in our conditioners
- 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.
- Cetyl Esters · 3
- Lactic Acid · 3
- Hexyl Cinnamal · 3
- Benzyl Alcohol · 3
- Alpha-Isomethyl Ionone · 2
- Hydroxyethylcellulose · 2
- Isopropyl Alcohol · 2
- Behentrimonium Chloride · 2
- Distarch Phosphate · 1
- Polyquaternium-30 · 1
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to soften the strand, hold on to water, 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.
L'Oreal Professionnel · Mask / treatment
Metal Detox Pre-Shampoo Treatment
#3 on the label · $4.17/oz
Redken · Mask / treatment
Extreme Mega Mask
#3 on the label · $4.24/oz
Redken · Conditioner
Volume Injection Conditioner
#4 on the label · $2.87/oz
Biolage · Conditioner
Full Rescue Conditioner
#5 on the label · $1.64/oz
Redken · Shampoo
Volume Injection Shampoo
#10 on the label · $2.82/oz
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Aminopropyl Triethoxysilane
- film former
- aminopropyl triethoxysilane
For your hair?
Whether Aminopropyl Triethoxysilane matters for your hair depends on your hair.
4 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 — 4 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.