What it is
In the register’s words: “Rosmarinus Officinalis Leaf Extract is an extract of the leaves of the Rosemary, Rosmarinus officinalis L., Lamiaceae.”
- EU register name (INCI)
- ROSMARINUS OFFICINALIS LEAF EXTRACT
- CAS number
- 84604-14-8
- EC number
- 283-291-9
Labels often add a second name in brackets, so a label may say Rosmarinus Officinalis (Rosemary) Leaf Extract where the register says ROSMARINUS OFFICINALIS LEAF EXTRACT. Both are the same ingredient.
What the register lists it for
These are the uses the European Commission’s CosIng register lists for Rosmarinus Officinalis (Rosemary) Leaf Extract in any cosmetic, hair roles first. They say why a maker might add it, not what it does in one formula, and they aren’t a safety rating.
- Antimicrobial
-
Slows the growth of microbes, in the product or on the surface it touches. Some preservatives, extracts and essential oils carry this role.
Register definition: “Preventing and/or slowing down microbial growth.”
- Fragrance
-
Gives the product its smell or covers an unpleasant one. A label may name each scent ingredient or group them as Fragrance (Parfum).
Register definition: “Imparting an odour or taste. Creating a perceivable pleasant smell and/or masking a bad smell.”
- Skin conditioning
-
The register’s broad role for ingredients that keep skin in good condition. On a hair label it often sits beside a hair role, or marks a plant oil or extract.
Register definition: “Maintaining the skin in good condition.”
Where it sits on each label
US labels list ingredients from most to least, except that those at 1% or less may follow in any order. A name near the top is a large part of the formula. A label doesn’t mark where the 1% point falls, so further down, the order says little about how much is in it.
- Shampoos 4 labels First five names: 0 of 4 Shampoos without it
- Clarifying shampoos 2 labels First five names: 0 of 2 Clarifying shampoos without it
- Rinse-out conditioners 6 labels First five names: 0 of 6 Rinse-out conditioners without it
- Deep conditioners 3 labels First five names: 0 of 3 Deep conditioners without it
- Leave-in conditioners 1 label First five names: 0 of 1 Leave-in conditioners without it
- Stylers 7 labels First five names: 0 of 7 Stylers without it
- Hair oils 1 label First five names: 0 of 1 Hair oils without it
- Curl refreshers 1 label First five names: 0 of 1 Curl refreshers without it
Every label, product by product (25)
- OLAPLEX No.4 Bond Maintenance Strengthening Shampoo Shampoo 20th of 78 names
- Curlsmith Essential Moisture Shampoo Shampoo 12th of 28 names
- Giovanni Curl Habit Curl Defining Shampoo Shampoo · listed as *Rosmarinus Officinalis (Rosemary) Leaf Extract 15th of 31 names
- Curlsmith Fragrance-Free Shampoo Shampoo 12th of 23 names
- PATTERN Cleansing Shampoo Clarifying shampoo 13th of 34 names
- Bounce Curl Gentle Clarifying Shampoo Clarifying shampoo 17th of 31 names
- tgin Triple Moisture Replenishing Conditioner Rinse-out conditioner 11th of 33 names
- Giovanni Smooth As Silk Deeper Moisture Conditioner Rinse-out conditioner · listed as *Rosmarinus Officinalis (Rosemary) Leaf Extract 7th of 20 names
- Curlsmith Essential Moisture Conditioner Rinse-out conditioner 15th of 33 names
- Curlsmith Fragrance-Free Conditioner Rinse-out conditioner 16th of 29 names
- Bounce Curl Super Smooth Cream Conditioner Rinse-out conditioner · listed as **Rosmarinus Officinalis (Rosemary) Leaf Extract 20th of 34 names
- Aunt Jackie's In Control Moisturizing Softening Conditioner Rinse-out conditioner 27th of 39 names
- Curlsmith Double Cream Deep Quencher Deep conditioner 14th of 36 names
- Giovanni Curl Habit Curl Defining Deep Conditioning Hair Mask Deep conditioner · listed as *Rosmarinus Officinalis (Rosemary) Leaf Extract 13th of 24 names
- Bounce Curl Ayurvedic Deep Conditioner Deep conditioner 24th of 34 names
- Giovanni Direct Leave-In Weightless Moisture Conditioner Leave-in conditioner · listed as *Rosmarinus Officinalis (Rosemary) Leaf Extract 10th of 20 names
- Ouidad Curl Quencher Moisturizing Styling Gel Styler 9th of 38 names
- PATTERN Curl Gel Styler 12th of 38 names
- Curlsmith In-Shower Style Fixer Styler 10th of 30 names
- Rizos Curls Light Hold Gel Styler 18th of 29 names
- Giovanni Curl Habit Curl Shaping Hair Gel Styler · listed as *Rosmarinus Officinalis (Rosemary) Leaf Extract 14th of 21 names
- Camille Rose Aloe Whipped Butter Gel Styler 13th of 18 names
- Giovanni L.A. Hold Styling Gel Styler · listed as *Rosmarinus Officinalis (Rosemary) Leaf Extract 18th of 22 names
- Bouclème Revive 5 Hair Oil Hair oil 21st of 31 names
- Curlsmith Shake & Shine Curl refresher 22nd of 51 names
Each line runs from the first name on a label to the last; a dot is where this ingredient sits. Makers change formulas now and then; if the list on your bottle differs, go by your bottle.
Your next step
Other antimicrobial ingredients on these labels
- Phenoxyethanol 120 labels
- Cetrimonium Chloride 39 labels
- Benzyl Benzoate 22 labels
- Camellia Sinensis Leaf Extract 15 labels
- C12-15 Alkyl Benzoate 6 labels
- Chlorphenesin 5 labels
- Alcohol Denat. 3 labels
- Cetrimonium Bromide 3 labels
Updated · The name, numbers and uses come from the European Commission’s CosIng entry (CC BY 4.0); we write the uses in US spelling and put the hair ones first. The labels are each maker’s own. The order rule is the FDA’s Cosmetics Labeling Guide. All our sources are on the Sources page.