ANTIOXIDANT
Rosmarinus Officinalis (Rosemary) Leaf Extract
- antioxidant
Rosemary extract, used both as a scent note and as a natural antioxidant in scalp products.
- products in our library
- 448
- of researched products
- 7%
- on the label, in our shampoos
- usually #17
- most common in
- Shampoo
- 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.
What it is in the formula to protect.
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 |
| Role | Protects oils | 2 of 5 |
| Prominence | Secondary | 2 of 5 |
What it does for a formula
What Rosmarinus Officinalis (Rosemary) Leaf Extract does
The general function first, then how the role changes by product type where we have researched it.
Protects the oils in the bottle rather than the hair.
What it contributes depends entirely on how much of it is in the bottle.
Most botanicals sit below the 1% line, where label order stops indicating amount.
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 ? |
|---|---|---|
Shampoo
86 products
|
secondary · #17 | |
Conditioner
82 products
|
secondary · #24 | |
Leave-in
40 products
|
secondary · #17 | |
Scalp treatment
40 products
|
secondary · #14 | |
Finisher: oil
31 products
|
secondary · #13 | |
Mask / treatment
23 products
|
secondary · #24 | |
Styler: gel
20 products
|
secondary · #12 | |
Heat protectant
17 products
|
secondary · #21 | |
Styler: paste
15 products
|
secondary · #21 | |
Co-wash
14 products
|
secondary · #16 |
11 more product types
| Product type | How common | Typical position on label ? |
|---|---|---|
Styler: curl cream
14 products
|
secondary · #23 | |
Styler: hairspray
14 products
|
secondary · #9 | |
Styler: mousse
9 products
|
secondary · #11 | |
Styler: volumizer
9 products
|
secondary · #12 | |
Finisher: serum
8 products
|
secondary · #17 | |
Finisher: shine spray
8 products
|
secondary · #13 | |
Styler: smoothing cream
8 products
|
secondary · #13 | |
Dry shampoo
3 products
|
secondary · #9 | |
Finisher: anti frizz finish
3 products
|
secondary · #13 | |
Styler: texture spray
3 products
|
secondary · #11 | |
Styler: lotion
1 product
|
secondary · #26 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Shampoo | 86 | 6% | 17 | 3 | secondary |
| Conditioner | 82 | 7% | 24 | 6 | secondary |
| Leave-in | 40 | 6% | 17 | 4 | secondary |
| Scalp treatment | 40 | 14% | 14 | 3 | secondary |
| Finisher: oil | 31 | 11% | 13 | 4 | secondary |
| Mask / treatment | 23 | 4% | 24 | 5 | secondary |
| Styler: gel | 20 | 7% | 12 | 7 | secondary |
| Heat protectant | 17 | 8% | 21 | 5 | secondary |
| Styler: paste | 15 | 8% | 21 | 6 | secondary |
| Co-wash | 14 | 14% | 16 | 5 | secondary |
| Styler: curl cream | 14 | 6% | 23 | 8 | secondary |
| Styler: hairspray | 14 | 6% | 9 | 4 | secondary |
| Styler: mousse | 9 | 4% | 11 | 8 | secondary |
| Styler: volumizer | 9 | 6% | 12 | 7 | secondary |
| Finisher: serum | 8 | 6% | 17 | 11 | secondary |
| Finisher: shine spray | 8 | 8% | 13 | 3 | secondary |
| Styler: smoothing cream | 8 | 10% | 13 | 8 | secondary |
| Dry shampoo | 3 | 2% | 9 | 9 | secondary |
| Finisher: anti frizz finish | 3 | 9% | 13 | 7 | secondary |
| Styler: texture spray | 3 | 3% | 11 | 7 | secondary |
| Styler: lotion | 1 | 3% | 26 | 26 | 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 | 55 |
| 9-15 | Secondary | 134 |
| 16-25 | Lower | 134 |
| 26+ | Trace | 121 |
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.
Why it matters to shoppers
What seeing this ingredient tells you, what it does not, and the limits of our own method.
- oils that do not turn rancid in the bottle
- plant-derived ingredients on the label
- 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 antioxidant, listed below the main ingredients in our shampoos
- it was on the printed ingredient list of every product we counted (we read labels, not marketing copy)
- a meaningful amount of the plant
- a meaningful amount of the plant (most sit below the 1% line)
- 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.
- Tocopherol · 191
- Ethylhexylglycerin · 177
- Caprylyl Glycol · 149
- Helianthus Annuus (Sunflower) Seed Oil · 142
- Propanediol · 127
- Benzyl Alcohol · 108
- Oryza Sativa (Rice) Bran Extract · 104
- Guar Hydroxypropyltrimonium Chloride · 100
- Cetyl Alcohol · 93
- Helianthus Annuus (Sunflower) Extract · 92
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, soften the strand, 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.
Original Sprout · Finisher
Classic Finishing Mist
#3 on the label · $3.75/oz
Pacifica · Scalp treatment
Scalp Love Rosemary Mint Serum
#3 on the label · $5.88/oz
Rahua · Scalp treatment
Founder's Blend Scalp & Hair Treatment
#3 on the label · $13.33/oz
Uncle Funky's Daughter · Shampoo
Rich & Funky
#3 on the label · $1.74/oz
Avlon · Finisher
ProGrowth Oil
#4 on the label · $4.98/oz
Drybar · Styler
Seltzer Spritz Flexible Hold Hairspray - 1.7 oz
#4 on the label · $9.41/oz
Drybar · Styler
Seltzer Spritz Flexible Hold Hairspray - 9.0 oz
#4 on the label · $3.04/oz
Marc Anthony · Scalp treatment
Grow Long Scalp & Hair Serum
#4 on the label · $4.49/oz
Odele · Scalp treatment
Rejuvenating Scalp Serum
#4 on the label · $6.50/oz
Rahua · Leave-in
Leave-In Treatment Light
#4 on the label · $14.55/oz
Trader Joe's · Shampoo
Tea Tree Tingle Shampoo
#4 on the label · $1.19/oz
Aveda · Shampoo
Rosemary Mint Purifying Shampoo
#5 on the label · $2.80/oz
See all 448 products in the library that list Rosmarinus Officinalis (Rosemary) Leaf Extract
Identity
What this entry is, and what our references call it.
No public-domain structure depiction is available for this entry.
Rosmarinus Officinalis (Rosemary) Leaf Extract
- botanical extract
- organic rosmarinus officinalis (rosemary leaf) extract
- organic rosmarinus officinalis (rosemary) leaf
- rosemary extract
- rosemary extract (rosmarinus officinalis)
- rosmarinus ocinalis (rosemary) leaf extract
- rosmarinus ofcinalis (rosemary) leaf extract
- rosmarinus officinalis (rosemary) leaf extract
- rosmarinus officinalis (rosemary) leaf extract (rosemary)
- rosmarinus officinalis (rosemary) leaf extract*^
- rosmarinus officinalis leaf
- rosmarinus officinalis leaf extract
- rosmarinusofficinalis (rosemary) leaf extract
- rosmarinusofficinalis leaf extract
For your hair?
Whether Rosmarinus Officinalis (Rosemary) Leaf Extract matters for your hair depends on your hair.
the 5th most-listed preservative or antioxidant 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
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: 448 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.
