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
- 14
- of researched products
- 0.2%
- on the label, in our conditioners
- usually #7
- most common in
- Conditioner
- in water
- Water-dispersible
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.
Whether hair pulls it in or pushes it away, read from its 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
4 products
|
supporting · #7 | |
Mask / treatment
3 products
|
leading · #3 | |
Shampoo
3 products
|
secondary · #29 | |
Leave-in
2 products
|
secondary · #12 | |
Heat protectant
1 product
|
supporting · #6 | |
Styler: volumizer
1 product
|
leading · #3 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Conditioner | 4 | 0% | 7 | 4 | supporting |
| Mask / treatment | 3 | 1% | 3 | 2 | leading |
| Shampoo | 3 | 0% | 29 | 10 | secondary |
| Leave-in | 2 | 0% | 12 | 2 | secondary |
| Heat protectant | 1 | 0% | 6 | 6 | supporting |
| Styler: volumizer | 1 | 1% | 3 | 3 | leading |
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 | 5 |
| 4-8 | Supporting | 4 |
| 9-15 | Secondary | 1 |
| 16-25 | Lower | 2 |
| 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
Formulation guidance for specific hair conditions, limited to the label positions where it applies. It is not a conclusion about any finished product, or 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 seeing this ingredient tells you, what it does not, and the limits of our own method.
- 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, 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 conditioning agent alongside the main ingredients in our conditioners
- 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.
- Lactic Acid · 10
- Benzyl Alcohol · 9
- Hexyl Cinnamal · 6
- Polyquaternium-6 · 5
- Arginine · 5
- Alpha-Isomethyl Ionone · 5
- Benzyl Salicylate · 5
- Sodium Hydroxide · 5
- Citronellol · 5
- Sodium Chloride · 5
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to hold on to water, carry the formula and let it dry, 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 · Leave-in
[Curl Expression] Moisturizing Leave-in Cream
#2 on the label · $4.93/oz
L'Oreal Professionnel · Mask / treatment
Absolut Repair Molecular Concentrated Pre-Treatment
#2 on the label · $9.64/oz
L'Oreal Professionnel · Styler
[Volumetry] Anti-gravity Root Spray
#3 on the label · $8.51/oz
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 · $2.92/oz
Biolage · Conditioner
Full Rescue Conditioner
#5 on the label · $1.64/oz
Redken · Heat protectant
QUICK BLOWOUT
#6 on the label · $8.36/oz
L'Oreal Paris · Conditioner
Elvive Volume Filler Thickening Conditioner
#8 on the label · $0.44/oz
Redken · Shampoo
Volume Injection Shampoo
#10 on the label · $2.82/oz
L'Oreal Professionnel · Leave-in
[Pro Longer] Renewing Cream
#21 on the label · $6.03/oz
L'Oreal Professionnel · Conditioner
[Pro Longer] Hair Thickening Conditioner
#24 on the label · $2.60/oz
See all 14 products in the library that list Aminopropyl Triethoxysilane
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.
14 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: 14 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.
