Ingredient
Rosmarinus Officinalis (Rosemary) Leaf Oil
What is Rosmarinus Officinalis (Rosemary) Leaf Oil?
Rosmarinus Officinalis Leaf Oil, commonly known as rosemary oil, is derived from the leaves of the rosemary plant through steam distillation. It is known for its aromatic properties and is used in various personal care and cosmetic products.
In hair care products, rosemary oil is often used for its potential to improve hair and scalp health. Some studies suggest it may have antimicrobial and antioxidant properties, although the evidence is mixed and more research is needed to confirm these effects.
When you see rosemary leaf oil on a label, it usually indicates the product may have a refreshing herbal scent. Some users may experience sensitivity, so it's always wise to do a patch test before extensive use.
Commonly found in: shampoos, conditioners, hair oils, skin creams, aromatherapy products
What to watch
- Skin irritation may occur for people with sensitive skin.
Benefits
- Potential antioxidant properties which may support scalp health.
Rosemary oil is generally recognized as safe (GRAS) for use in food and cosmetics.
Studies show mixed results on its effectiveness for hair growth and antimicrobial properties.
Rosemary leaf oil is plant-derived and suitable for vegan use.
Sources: Cosmetic Ingredient Review · Rosemary Oil Overview
Scout's take
Rosemary oil is a natural essential oil that is often used to stimulate hair growth and improve circulation in the scalp. It contains antioxidants that help to protect hair from damage. Its antimicrobial properties can also help maintain a healthy scalp.
The case against
Rosemary oil can cause skin irritation or allergic reactions in sensitive individuals.
from the analysis of Artnaturals Organic Rosemary and Castor Hair Oil Set with Massager with Coconut and Olive Oil for Dry Damaged Hair and Split EndsThe case for
It is known to improve hair thickness and promote a healthy scalp environment.
from the analysis of Artnaturals Organic Rosemary and Castor Hair Oil Set with Massager with Coconut and Olive Oil for Dry Damaged Hair and Split EndsMore from Scout's analyses
The flagship active. Panahi 2015 RCT (n=100, 6 months) showed rosemary oil matched 2% minoxidil for hair regrowth in androgenetic alopecia, with significantly less scalp itching. The strongest clinical evidence for any plant-derived hair growth active.
from the analysis of Mielle Organics Rosemary Mint Scalp & Hair Strengthening OilFound in 2 products
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