PH ADJUSTER
Aminomethyl Propanol
- pH adjuster
A base used in trace amounts to neutralise acidic hold polymers so they thicken and set properly.
- products in our library
- 570
- of researched products
- 8%
- on the label, in our styling hairsprays
- usually #6
- most common in
- Styler: hairspray
- in water
- Water-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.
The housekeeping this class does.
Where it sits on the labels we have, in the category it appears in most.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Low | 1 of 5 |
| Rinse-out behaviour | Rinses clean | 5 of 5 |
| Job | Sets acidity | 3 of 5 |
| Prominence | Supporting | 4 of 5 |
What it does for a formula
What Aminomethyl Propanol does
The general function first, then how the role changes by product type where we have researched it.
The cuticle lies flatter on the acidic side; this is how a formula gets there.
Water alone removes it, so it does not accumulate between washes.
Charge
Charge is not recorded for this ingredient.
Solubility
Rinses out with water alone, so it does not build up on hair between washes.
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 ? |
|---|---|---|
Styler: hairspray
179 products
|
supporting · #6 | |
Styler: gel
79 products
|
supporting · #8 | |
Leave-in
35 products
|
secondary · #24 | |
Shampoo
32 products
|
secondary · #19 | |
Styler: curl cream
32 products
|
secondary · #18 | |
Heat protectant
28 products
|
secondary · #11 | |
Mask / treatment
27 products
|
secondary · #21 | |
Styler: paste
25 products
|
secondary · #16 | |
Styler: mousse
24 products
|
secondary · #15 | |
Conditioner
21 products
|
secondary · #22 |
13 more product types
| Product type | How common | Typical position on label ? |
|---|---|---|
Scalp treatment
19 products
|
secondary · #20 | |
Styler: volumizer
12 products
|
secondary · #14 | |
Styler: texture spray
10 products
|
secondary · #11 | |
Finisher: shine spray
9 products
|
supporting · #7 | |
Styler: smoothing cream
9 products
|
secondary · #16 | |
Finisher: serum
7 products
|
secondary · #16 | |
Co-wash
5 products
|
secondary · #11 | |
Finisher: oil
4 products
|
secondary · #27 | |
Styler: lotion
4 products
|
secondary · #14 | |
Styler: refresh spray
4 products
|
secondary · #23 | |
Dry shampoo
2 products
|
secondary · #11 | |
Styler: edge control
2 products
|
secondary · #25 | |
Finisher: anti frizz finish
1 product
|
secondary · #15 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Styler: hairspray | 179 | 74% | 6 | 4 | supporting |
| Styler: gel | 79 | 30% | 8 | 3 | supporting |
| Leave-in | 35 | 5% | 24 | 4 | secondary |
| Shampoo | 32 | 2% | 19 | 2 | secondary |
| Styler: curl cream | 32 | 14% | 18 | 4 | secondary |
| Heat protectant | 28 | 14% | 11 | 6 | secondary |
| Mask / treatment | 27 | 5% | 21 | 7 | secondary |
| Styler: paste | 25 | 13% | 16 | 6 | secondary |
| Styler: mousse | 24 | 12% | 15 | 8 | secondary |
| Conditioner | 21 | 2% | 22 | 4 | secondary |
| Scalp treatment | 19 | 7% | 20 | 5 | secondary |
| Styler: volumizer | 12 | 8% | 14 | 8 | secondary |
| Styler: texture spray | 10 | 10% | 11 | 6 | secondary |
| Finisher: shine spray | 9 | 9% | 7 | 4 | supporting |
| Styler: smoothing cream | 9 | 11% | 16 | 9 | secondary |
| Finisher: serum | 7 | 5% | 16 | 4 | secondary |
| Co-wash | 5 | 5% | 11 | 9 | secondary |
| Finisher: oil | 4 | 1% | 27 | 15 | secondary |
| Styler: lotion | 4 | 11% | 14 | 6 | secondary |
| Styler: refresh spray | 4 | 11% | 23 | 15 | secondary |
| Dry shampoo | 2 | 2% | 11 | 6 | secondary |
| Styler: edge control | 2 | 5% | 25 | 15 | secondary |
| Finisher: anti frizz finish | 1 | 3% | 15 | 15 | secondary |
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 | 223 |
| 9-15 | Secondary | 149 |
| 16-25 | Lower | 122 |
| 26+ | Trace | 72 |
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.
pH adjusters are how a formula is brought to a chosen acidity, and an acidic formula keeps the cuticle lying flatter than an alkaline one. Which way this one moves the pH depends on the formula, and the finished pH is not on the label.
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.
- a formula set to the acidity the cuticle prefers
- a rinse-clean feel
- 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 pH adjuster alongside the main ingredients in our styling hairsprays
- 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.
- Alcohol Denat. · 255
- Ethylhexylglycerin · 211
- Hydrofluorocarbon 152a · 164
- Octylacrylamide/Acrylates/Butylaminoethyl Methacrylate Copolymer · 156
- Hexyl Cinnamal · 152
- Benzyl Alcohol · 145
- Citronellol · 143
- Tocopherol · 128
- Butylene Glycol · 125
- Caprylyl Glycol · 112
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to carry the formula and let it dry, soften the strand, and give the formula body and hold.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
Rusk · Shampoo
Sensories Smoother Passionflower & Aloe Smoothing Shampoo
#2 on the label · $0.60/oz
Moroccanoil · Styler
Styling Gel Strong
#3 on the label · $5.33/oz
ORS · Styler
Olive Oil Style & Sculpt Ultra HD Curl Clumping Gel
#3 on the label · $0.50/oz
Wella Professionals · Styler
EIMI Pearl Styler Styling Hair Gel
#3 on the label · $3.97/oz
American Crew · Styler
Firm Hold Styling Cream
#4 on the label · $4.22/oz
Aunt Jackie's · Styler
Curl Boss Coconut Curling Gelée
#4 on the label · $0.66/oz
Aunt Jackie's · Styler
Flaxseed Don't Shrink Curling Gel
#4 on the label · $0.47/oz
Aunt Jackie's · Styler
Ice Curls Glossy Curling Jelly
#4 on the label · $0.70/oz
Aveda · Styler
control force™ firm hold hair spray
#4 on the label · $4.40/oz
Avlon · Styler
KeraCare Thermal Spritz
#4 on the label · $0.87/oz
Bed Head · Styler
Hard Head Hairspray for Extra Strong Hold
#4 on the label · $1.88/oz
Better Not Younger · Styler
Wake Up Call Volumizing Strong Hold Hairspray
#4 on the label · $3.82/oz
See all 570 products in the library that list Aminomethyl Propanol
Identity
What this entry is, and what our references call it.
Aminomethyl Propanol
- CAS 124-68-5
- PubChem 11807
- amino methyl propanol
- aminomethyl propanol
- aminomethylpropanol
For your hair?
Whether Aminomethyl Propanol matters for your hair depends on your hair.
the 5th most-listed chelator or pH adjuster in our libraryWhat 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
Sourced Backed by a manufacturer or regulatory source.
This ingredient
- Manufacturer or regulatory PubChem : Compound identity: CID 11807, CAS 124-68-5, C4H11NO · accessed 2026-08-28
How this page was made
- Every number above is counted from the ingredient lists in our own product library: 570 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.
