EXFOLIANT
Tartaric Acid
- exfoliant
A fruit acid used to set an acidic pH; at higher levels it also loosens surface build-up.
- products in our library
- 113
- of researched products
- 2%
- on the label, in our conditioners
- usually #13
- 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.
Where it sits on the labels we have, in the category it appears in most.
Why a formulator says it is in there.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Low | 1 of 5 |
| Rinse-out behaviour | Rinses clean | 5 of 5 |
| Prominence | Secondary | 2 of 5 |
| Stated purpose | An exfoliant | 4 of 5 |
What it does for a formula
What Tartaric Acid does
The general function first, then how the role changes by product type where we have researched it.
Works on the surface; how much depends on the whole formula.
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 ? |
|---|---|---|
Conditioner
27 products
|
secondary · #13 | |
Shampoo
24 products
|
secondary · #25 | |
Leave-in
22 products
|
secondary · #22 | |
Mask / treatment
22 products
|
secondary · #25 | |
Heat protectant
4 products
|
secondary · #24 | |
Scalp treatment
4 products
|
secondary · #46 | |
Finisher: serum
2 products
|
secondary · #37 | |
Styler: gel
2 products
|
secondary · #25 | |
Styler: volumizer
2 products
|
secondary · #27 | |
Finisher: oil
1 product
|
secondary · #21 |
3 more product types
| Product type | How common | Typical position on label ? |
|---|---|---|
Styler: curl cream
1 product
|
secondary · #44 | |
Styler: hairspray
1 product
|
secondary · #30 | |
Styler: smoothing cream
1 product
|
secondary · #38 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Conditioner | 27 | 2% | 13 | 8 | secondary |
| Shampoo | 24 | 2% | 25 | 9 | secondary |
| Leave-in | 22 | 3% | 22 | 10 | secondary |
| Mask / treatment | 22 | 4% | 25 | 5 | secondary |
| Heat protectant | 4 | 2% | 24 | 18 | secondary |
| Scalp treatment | 4 | 1% | 46 | 32 | secondary |
| Finisher: serum | 2 | 1% | 37 | 32 | secondary |
| Styler: gel | 2 | 1% | 25 | 17 | secondary |
| Styler: volumizer | 2 | 1% | 27 | 19 | secondary |
| Finisher: oil | 1 | 0% | 21 | 21 | secondary |
| Styler: curl cream | 1 | 0% | 44 | 44 | secondary |
| Styler: hairspray | 1 | 0% | 30 | 30 | secondary |
| Styler: smoothing cream | 1 | 1% | 38 | 38 | 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 | 9 |
| 9-15 | Secondary | 23 |
| 16-25 | Lower | 36 |
| 26+ | Trace | 45 |
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 scalp product that works on the surface
- 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 secondary exfoliant, 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.
- Benzyl Alcohol · 77
- Hydroxypropylgluconamide · 63
- Hydroxypropylammonium Gluconate · 61
- Caprylyl Glycol · 50
- Lactic Acid · 44
- Tocopherol · 42
- Stearamidopropyl Dimethylamine · 37
- Sodium Chloride · 34
- Ethylhexylglycerin · 33
- Cetrimonium Chloride · 32
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, improve feel after rinsing, and hold on to water.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
Pureology · Mask / treatment
Color Fanatic Top Coat Clear Hair Gloss
#5 on the label · $5.67/oz
Carol's Daughter · Mask / treatment
Born to Repair 60-Second Moisture Treatment with Shea Butter
#7 on the label · $2.09/oz
Garnier Fructis · Conditioner
Hair Filler + Polypeptides Fullness Repair Conditioner
#8 on the label · $0.89/oz
Garnier Fructis · Conditioner
Pure Moisture Conditioner
#8 on the label · $0.60/oz
Garnier Fructis · Conditioner
Whole Blends Honey Water Moisture Restoring Conditioner
#8 on the label · $0.46/oz
L'Oreal Paris · Conditioner
EverPure Silver Care Conditioner
#8 on the label · $1.29/oz
L'Oreal Paris · Conditioner
EverPure Sulfate-Free Restoring Conditioner with Antioxidants
#8 on the label · $5.21/oz
Matrix · Mask / treatment
Mega Sleek Smoothie Supreme Mask
#8 on the label · $2.72/oz
Redken · Conditioner
Acidic Grow Full System Densifying Conditioner
#8 on the label · $3.46/oz
L'Oreal Paris · Conditioner
EverPure Sulfate-Free Iron Sleek Smoothing Conditioner
#9 on the label · $1.62/oz
Schwarzkopf Professional · Shampoo
FIBRE CLINIX Vibrancy Shampoo
#9 on the label · $2.87/oz
Biolage · Conditioner
Strength Recovery Conditioner
#10 on the label · $1.33/oz
Identity
What this entry is, and what our references call it.
Tartaric Acid
- CAS 87-69-4
- PubChem 444305
- pH adjuster
- tartaric acid
For your hair?
Whether Tartaric Acid matters for your hair depends on your hair.
113 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
Sourced Backed by a manufacturer or regulatory source.
This ingredient
- Manufacturer or regulatory PubChem : Compound identity: CID 444305, CAS 87-69-4, C4H6O6 · accessed 2026-08-28
How this page was made
- Every number above is counted from the ingredient lists in our own product library: 113 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.
