SILICONE
Cetyl Triethylmonium Dimethicone Peg-8 Succinate
- silicone
A fatty ester. Esters give slip and a smooth after-feel; lighter ones read dry and silky, heavier ones read rich.
- products in our library
- 16
- of researched products
- 0.2%
- on the label, in our heat protectants
- usually #5
- most common in
- Heat protectant
- in water
- Oil-soluble
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.
How much easier it makes a comb pass.
How much the class is felt on fine hair.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Needs a cleanser | 4 of 5 |
| Rinse-out behaviour | Rinses with a cleanser | 2 of 5 |
| Slip | High | 5 of 5 |
| Weight | Noticeable | 4 of 5 |
What it does for a formula
What Cetyl Triethylmonium Dimethicone Peg-8 Succinate does
The general function first, then how the role changes by product type where we have researched it.
Fills the gaps between lifted cuticle scales so light reflects evenly.
Lowers the drag a comb feels, which is most of what "detangling" means.
Smooths the feel of the strand without adding hold or cleaning.
A light, fast-spreading lipid used where an oil would feel heavy.
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 ? |
|---|---|---|
Heat protectant
5 products
|
supporting · #5 | |
Shampoo
4 products
|
secondary · #22 | |
Conditioner
1 product
|
secondary · #32 | |
Finisher: anti frizz finish
1 product
|
leading · #3 | |
Finisher: serum
1 product
|
supporting · #4 | |
Leave-in
1 product
|
supporting · #4 | |
Relaxer
1 product
|
secondary · #10 | |
Scalp treatment
1 product
|
leading · #3 | |
Styler: refresh spray
1 product
|
supporting · #5 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Heat protectant | 5 | 2% | 5 | 2 | supporting |
| Shampoo | 4 | 0% | 22 | 21 | secondary |
| Conditioner | 1 | 0% | 32 | 32 | secondary |
| Finisher: anti frizz finish | 1 | 3% | 3 | 3 | leading |
| Finisher: serum | 1 | 1% | 4 | 4 | supporting |
| Leave-in | 1 | 0% | 4 | 4 | supporting |
| Relaxer | 1 | 25% | 10 | 10 | secondary |
| Scalp treatment | 1 | 0% | 3 | 3 | leading |
| Styler: refresh spray | 1 | 3% | 5 | 5 | supporting |
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 | 4 |
| 4-8 | Supporting | 4 |
| 9-15 | Secondary | 2 |
| 16-25 | Lower | 4 |
| 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.
A surface film slows how quickly humidity reaches the cortex, which is what limits swelling-driven frizz in damp air.
Lays a smooth film along the cuticle, which lowers combing friction and flattens the surface irregularities that read as frizz.
Dimethicone does not disperse in water. On a routine that skips detergent it stays on the hair and accumulates wash after wash.
Read where it is listed in the first three ingredients, positions 4–8 or the lower half of the ordered list.High on a list, a conditioning film is weight, and fine hair loses root lift to it before it gains much smoothness.
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 seeing this ingredient tells you, what it does not, and the limits of our own method.
- softness without weight
- slip and surface smoothing
- a softer feel
- something that lasts through the day
- 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 silicone alongside the main ingredients in our heat protectants
- it was on the printed ingredient list of every product we counted (we read labels, not marketing copy)
- buildup, since the water-soluble ones rinse out with ordinary shampoo
- 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.
Why some people avoid it
A conditioning agent that lays a smooth film on the cuticle, which is what delivers slip, shine and frizz control.
The water-insoluble ones need a detergent wash to remove, so on a routine that avoids detergent they accumulate and can leave hair feeling coated. That is the curly-method objection, and it is about buildup rather than harm. Water-soluble silicones rinse out and do not raise it.
Where regulators stand: Permitted. Some cyclic silicones are restricted in the EU on environmental grounds (they persist in waterways), not for anything to do with skin.
A formulation preference, not a regulatory finding
Browse products in our library without Cetyl Triethylmonium Dimethicone Peg-8 Succinate
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.
- Caprylyl Glycol · 11
- Disodium EDTA · 10
- Sodium Coco Pg-Dimonium Chloride Phosphate · 9
- Hexylene Glycol · 9
- Hexyl Cinnamal · 8
- Ethylhexylglycerin · 8
- Polysorbate 20 · 7
- Butylene Glycol · 7
- Glycolic Acid · 6
- BHT · 6
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, keep the formula stable, and improve feel after rinsing.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
Kevin Murphy · Heat protectant
Heated.Defense
#2 on the label · $5.83/oz
Drybar · Heat protectant
Liquid Glass Miracle Smoothing Sealant
#3 on the label · $5.82/oz
Drybar · Finisher
Liquid Glass Moisture-Rich Miracle Smoothing Sealant
#3 on the label · $5.63/oz
ORS · Scalp treatment
HAIRestore Fertilizing Serum
#3 on the label · $4.50/oz
MoKnowsHair · Finisher
SLEEK SERUM
#4 on the label · $7.00/oz
Not Your Mother's · Leave-in
Way To Grow Leave-In Conditioner
#4 on the label · $1.46/oz
Oribe · Heat protectant
Invisible Defense Universal Protection Spray
#5 on the label · $10.20/oz
Oribe · Styler
Mystify Restyling Spray
#5 on the label · $7.80/oz
ORS · Relaxer
Olive Oil Professional Creme Relaxer Extra Strength
#10 on the label · $0.60/oz
BioSilk · Heat protectant
Silk Therapy Gold Thermal and Anti-Humidity Shield
#12 on the label · $4.43/oz
Drybar · Shampoo
On the Rocks Clarifying Charcoal Shampoo
#21 on the label · $2.83/oz
Oribe · Shampoo
Serene Scalp Anti-Dandruff Shampoo
#21 on the label · $5.51/oz
See all 16 products in the library that list Cetyl Triethylmonium Dimethicone Peg-8 Succinate
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Cetyl Triethylmonium Dimethicone Peg-8 Succinate
- emollient
- light ester
- cetyl triethylmonium dimethicone peg-8 succinate
For your hair?
Whether Cetyl Triethylmonium Dimethicone Peg-8 Succinate matters for your hair depends on your hair.
16 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: 16 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.
