EMULSIFIER
Lecithin
- emulsifier
A soy- or sunflower-derived lipid that helps conditioning ingredients spread evenly on the strand.
- products in our library
- 90
- of researched products
- 2%
- on the label, in our conditioners
- usually #24
- 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.
How much oil it strips, as a class.
The foam the class is known for, not a measured volume.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Low | 2 of 5 |
| Rinse-out behaviour | Rinses with shampoo | 4 of 5 |
| Cleansing strength | Not a cleanser | 1 of 5 |
| Lather | Little | 1 of 5 |
What it does for a formula
What Lecithin does
The general function first, then how the role changes by product type where we have researched it.
Without one, a cream separates in the bottle.
Smooths the feel of the strand without adding hold or cleaning.
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
25 products
|
secondary · #24 | |
Shampoo
24 products
|
secondary · #27 | |
Scalp treatment
10 products
|
secondary · #27 | |
Mask / treatment
9 products
|
secondary · #28 | |
Leave-in
4 products
|
secondary · #14 | |
Styler: smoothing cream
4 products
|
secondary · #26 | |
Finisher: serum
3 products
|
secondary · #12 | |
Styler: mousse
3 products
|
secondary · #17 | |
Finisher: oil
2 products
|
secondary · #15 | |
Co-wash
1 product
|
secondary · #25 |
5 more product types
| Product type | How common | Typical position on label ? |
|---|---|---|
Finisher: end oil
1 product
|
secondary · #10 | |
Finisher: shine spray
1 product
|
secondary · #24 | |
Heat protectant
1 product
|
secondary · #10 | |
Styler: curl cream
1 product
|
secondary · #30 | |
Styler: hairspray
1 product
|
secondary · #19 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Conditioner | 25 | 4% | 24 | 8 | secondary |
| Shampoo | 24 | 3% | 27 | 13 | secondary |
| Scalp treatment | 10 | 6% | 27 | 9 | secondary |
| Mask / treatment | 9 | 2% | 28 | 19 | secondary |
| Leave-in | 4 | 1% | 14 | 11 | secondary |
| Styler: smoothing cream | 4 | 7% | 26 | 9 | secondary |
| Finisher: serum | 3 | 4% | 12 | 8 | secondary |
| Styler: mousse | 3 | 2% | 17 | 15 | secondary |
| Finisher: oil | 2 | 1% | 15 | 11 | secondary |
| Co-wash | 1 | 1% | 25 | 25 | secondary |
| Finisher: end oil | 1 | 11% | 10 | 10 | secondary |
| Finisher: shine spray | 1 | 2% | 24 | 24 | secondary |
| Heat protectant | 1 | 1% | 10 | 10 | secondary |
| Styler: curl cream | 1 | 1% | 30 | 30 | secondary |
| Styler: hairspray | 1 | 1% | 19 | 19 | 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 | 20 |
| 16-25 | Lower | 45 |
| 26+ | Trace | 44 |
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.
Emollients fill and smooth the surface of the strand, which lowers the friction that lifts the cuticle and reads as roughness.
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.
- a stable cream that does not separate
- a softer feel
- 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 secondary emulsifier, listed below 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.
- Tocopherol · 47
- Tocopheryl Acetate · 37
- Benzyl Alcohol · 33
- Camellia Sinensis (Green Tea) Leaf Extract · 30
- Propylene Glycol · 30
- Cetyl Alcohol · 27
- Behentrimonium Chloride · 27
- Biotin · 25
- Sodium Hydroxide · 24
- Helianthus Annuus (Sunflower) Seed Oil · 23
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to deliver a stated effect, carry the formula and let it dry, 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.
Curl Keeper · Styler
Twist & Shine - Styling Cream
#2 on the label · $5.33/oz
Curl Keeper · Mask / treatment
Rapid Bond Repair Treatment Mask
#3 on the label · $6.67/oz
Jessicurl · Conditioner
Too Shea! Extra Moisturizing Conditioner
#8 on the label · $2.49/oz
JVN · Finisher
Complete Instant Recovery Serum
#8 on the label · $9.41/oz
Bosley · Scalp treatment
Revive+ Densifying Serum for Men
#9 on the label · $24.99/oz
Bosley · Scalp treatment
Revive+ Densifying Serum for Women
#9 on the label · $24.99/oz
Innersense Organic Beauty · Styler
Air Dry Styling Cream
#9 on the label · $5.00/oz
Curl Keeper · Conditioner
Silk & Smooth - Moisturizing Conditioner
#10 on the label · $3.17/oz
Curlsmith · Heat protectant
Curlshield Cream
#10 on the label
ORS · Shampoo
ORS Olive Oil Deep Cleansing Creamy Aloe Shampoo for Rejuvenating Moisture
#10 on the label · $0.72/oz
R+Co · Finisher
Bleu Split End Fix Serum
#10 on the label · $29.50/oz
Drybar · Leave-in
Mr. Incredible The Ultimate Leave-In Conditioner
#11 on the label · $4.53/oz
Identity
What this entry is, and what our references call it.
Lecithin
- CAS 97281-47-5
- PubChem 16213884
- emollient
- lecithin
For your hair?
Whether Lecithin matters for your hair depends on your hair.
90 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 16213884, CAS 97281-47-5, C42H80NO8P · accessed 2026-08-28
How this page was made
- Every number above is counted from the ingredient lists in our own product library — 90 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.