LIGHT ESTER
Isoamyl Laurate
- light ester
A plant-derived light ester used as a silicone alternative for slip and shine.
- products in our library
- 35
- of researched products
- 0.9%
- on the label, in our conditioners
- usually #5
- most common in
- Conditioner
- in water
- Oil-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.
Where the class sits between an ester and a butter.
How much it slows water leaving the strand.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Needs a cleanser | 4 of 5 |
| Rinse-out behaviour | Rinses with a cleanser | 2 of 5 |
| Weight | Light | 2 of 5 |
| Sealing | Light | 2 of 5 |
What it does for a formula
What Isoamyl Laurate does
The general function first, then how the role changes by product type where we have researched it.
A light, fast-spreading lipid used where an oil would feel heavy.
Smooths the feel of the strand without adding hold or cleaning.
It takes a surfactant to remove — worth knowing on a low-detergent routine.
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 ? |
|---|---|---|
Conditioner
13 products
|
supporting · #5 | |
Leave-in
6 products
|
supporting · #6 | |
Finisher: oil
4 products
|
supporting · #4 | |
Mask / treatment
3 products
|
supporting · #6 | |
Shampoo
3 products
|
supporting · #6 | |
Styler: smoothing cream
2 products
|
supporting · #7 | |
Finisher: serum
1 product
|
supporting · #4 | |
Heat protectant
1 product
|
leading · #2 | |
Styler: curl cream
1 product
|
secondary · #21 | |
Styler: gel
1 product
|
secondary · #15 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Conditioner | 13 | 2% | 5 | 3 | supporting |
| Leave-in | 6 | 1% | 6 | 4 | supporting |
| Finisher: oil | 4 | 2% | 4 | 3 | supporting |
| Mask / treatment | 3 | 1% | 6 | 3 | supporting |
| Shampoo | 3 | 0% | 6 | 6 | supporting |
| Styler: smoothing cream | 2 | 4% | 7 | 7 | supporting |
| Finisher: serum | 1 | 1% | 4 | 4 | supporting |
| Heat protectant | 1 | 1% | 2 | 2 | leading |
| Styler: curl cream | 1 | 1% | 21 | 21 | secondary |
| Styler: gel | 1 | 1% | 15 | 15 | 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 | 6 |
| 4-8 | Supporting | 24 |
| 9-15 | Secondary | 4 |
| 16-25 | Lower | 2 |
| 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.
A light emollient: it softens the surface with noticeably less weight than an oil or a butter.
Spreads thin and lowers friction between strands without the heaviness of a fixed oil.
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.
- softness without weight
- a softer feel
- something that lasts through the day
- body without weight on fine hair
- 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 emollient 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.
- Behentrimonium Chloride · 19
- Caprylyl Glycol · 17
- Guar Hydroxypropyltrimonium Chloride · 15
- Rosmarinus Officinalis (Rosemary) Leaf Extract · 14
- Propanediol · 14
- Sodium Hydroxide · 14
- Tocopherol · 14
- Isopropyl Alcohol · 13
- Tetrasodium Glutamate Diacetate · 12
- Butyrospermum Parkii (Shea) Butter · 12
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to improve feel after rinsing, hold on to water, and keep the formula stable.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
R+Co · Heat protectant
Hot Spell ThermoTech Blow Out Balm
#2 on the label · $8.10/oz
Act+Acre · Mask / treatment
Conditioning Hair Mask
#3 on the label · $8.44/oz
Act+Acre · Conditioner
Plant Based Stem Cell Conditioner™
#3 on the label · $4.20/oz
Rizos Curls · Conditioner
Gloss + Repair Conditioner
#3 on the label · $2.20/oz
Rizos Curls · Finisher
Gloss + Repair Oil Serum
#3 on the label · $40.35/oz
Virtue Labs · Conditioner
Scalp Remedy Conditioner
#3 on the label · $6.57/oz
Drybar · Finisher
Blowout Defense Rapid Repair & Finishing Oil
#4 on the label · $17.00/oz
Kenra Professional · Finisher
Triple Repair Split End Mending Serum
#4 on the label · $3.85/oz
Living Proof · Finisher
Living Proof frizz Vanishing Oil
#4 on the label · $21.18/oz
Living Proof · Finisher
No Frizz Vanishing Smooth Hair Oil
#4 on the label · $21.18/oz
Living Proof · Leave-in
Restore Repair Leave-In
#4 on the label · $8.50/oz
Odele · Conditioner
Thickening Conditioner
#4 on the label · $0.95/oz
See all 35 products in the library that list Isoamyl Laurate
Identity
What this entry is, and what our references call it.
Isoamyl Laurate
- CAS 6309-51-9
- PubChem 61386
- emollient
- isoamyl laurate
For your hair?
Whether Isoamyl Laurate 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
Sourced Backed by a manufacturer or regulatory source.
This ingredient
- Manufacturer or regulatory PubChem — Compound identity: CID 61386, CAS 6309-51-9, C17H34O2 · accessed 2026-08-28
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.