PH ADJUSTER
Sodium Phosphate
- pH adjuster
A buffering salt used to hold the formula at a steady pH.
- products in our library
- 184
- of researched products
- 3%
- on the label, in our conditioners
- usually #33
- most common in
- Conditioner
- 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 | Secondary | 2 of 5 |
What it does for a formula
What Sodium Phosphate 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.
A little salt turns a thin detergent solution into a pourable gel.
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 ? |
|---|---|---|
Conditioner
59 products
|
secondary · #33 | |
Mask / treatment
31 products
|
secondary · #30 | |
Leave-in
21 products
|
secondary · #29 | |
Shampoo
17 products
|
secondary · #47 | |
Scalp treatment
9 products
|
secondary · #31 | |
Styler: gel
8 products
|
secondary · #29 | |
Heat protectant
7 products
|
secondary · #45 | |
Styler: curl cream
7 products
|
secondary · #27 | |
Styler: smoothing cream
7 products
|
secondary · #30 | |
Finisher: serum
4 products
|
secondary · #27 |
9 more product types
| Product type | How common | Typical position on label ? |
|---|---|---|
Styler: mousse
4 products
|
secondary · #46 | |
Styler: lotion
2 products
|
secondary · #23 | |
Styler: volumizer
2 products
|
secondary · #21 | |
Co-wash
1 product
|
secondary · #35 | |
Finisher: anti frizz finish
1 product
|
secondary · #51 | |
Styler: edge control
1 product
|
secondary · #24 | |
Styler: paste
1 product
|
secondary · #49 | |
Styler: refresh spray
1 product
|
secondary · #21 | |
Styler: texture spray
1 product
|
secondary · #33 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Conditioner | 59 | 5% | 33 | 11 | secondary |
| Mask / treatment | 31 | 5% | 30 | 8 | secondary |
| Leave-in | 21 | 3% | 29 | 18 | secondary |
| Shampoo | 17 | 1% | 47 | 17 | secondary |
| Scalp treatment | 9 | 3% | 31 | 13 | secondary |
| Styler: gel | 8 | 3% | 29 | 12 | secondary |
| Heat protectant | 7 | 3% | 45 | 27 | secondary |
| Styler: curl cream | 7 | 3% | 27 | 13 | secondary |
| Styler: smoothing cream | 7 | 9% | 30 | 18 | secondary |
| Finisher: serum | 4 | 3% | 27 | 23 | secondary |
| Styler: mousse | 4 | 2% | 46 | 25 | secondary |
| Styler: lotion | 2 | 6% | 23 | 18 | secondary |
| Styler: volumizer | 2 | 1% | 21 | 17 | secondary |
| Co-wash | 1 | 1% | 35 | 35 | secondary |
| Finisher: anti frizz finish | 1 | 3% | 51 | 51 | secondary |
| Styler: edge control | 1 | 3% | 24 | 24 | secondary |
| Styler: paste | 1 | 1% | 49 | 49 | secondary |
| Styler: refresh spray | 1 | 3% | 21 | 21 | secondary |
| Styler: texture spray | 1 | 1% | 33 | 33 | 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 | 0 |
| 4-8 | Supporting | 1 |
| 9-15 | Secondary | 6 |
| 16-25 | Lower | 50 |
| 26+ | Trace | 127 |
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 thicker cleanser
- 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 secondary pH adjuster, listed below 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.
- Disodium Phosphate · 150
- Hydroxyethylcellulose · 130
- Polysorbate 60 · 127
- Ethylhexylglycerin · 121
- Tocopherol · 85
- Cetrimonium Chloride · 78
- Benzyl Alcohol · 78
- Caprylyl Glycol · 76
- Dimethicone · 75
- Behentrimonium Chloride · 71
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to keep the formula stable, give the formula body and hold, and clean and build foam.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
Sebastian · Mask / treatment
Potion 9 Pro-Grade Powder to Foam Treatment
#8 on the label · $56.60/oz
Better Not Younger · Conditioner
Full Transparency Shine Revitalizing Conditioner
#11 on the label · $3.45/oz
Curl Keeper · Styler
Ultimate Frizz Control
#12 on the label · $4.33/oz
Eva Nyc · Mask / treatment
H2-Whoa! Hydra-Jelly Hair Mask
#13 on the label · $1.91/oz
Joico · Scalp treatment
Scalp Vitality Replenishing Essence
#13 on the label · $6.86/oz
Rizos Curls · Styler
Defining Custard
#13 on the label · $2.20/oz
Paul Mitchell · Styler
Super Sculpt Styling Glaze
#14 on the label · $1.48/oz
DevaCurl · Shampoo
Low-Poo Original
#17 on the label · $2.16/oz
Not Your Mother's · Conditioner
Aura Boost Thickening Conditioner
#17 on the label · $0.85/oz
Not Your Mother's · Conditioner
Kids Daily Care Moisturizing Fragrance-Free Tear-Free Conditioner
#17 on the label · $0.87/oz
Paul Mitchell · Styler
Extra-Body Thicken Up Styling Liquid
#17 on the label · $4.51/oz
Bounce Curl · Leave-in
Thermal Guard Weightless Leave-In
#18 on the label · $2.98/oz
See all 184 products in the library that list Sodium Phosphate
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Sodium Phosphate
- salt
- sodium phosphate
- sodiumphosphate
For your hair?
Whether Sodium Phosphate matters for your hair depends on your hair.
184 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: 184 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.
