Science
Mechanism of Action
This oil functions by neutralizing free radicals, thereby protecting the skin from oxidative damage and premature aging. Its anti-inflammatory action helps to alleviate redness and soothe irritated skin, while its antimicrobial and antiseptic qualities assist in managing acne and controlling bacterial proliferation. Additionally, it stimulates microcirculation, supporting skin vitality, and helps to balance the skin's natural oil production.
Research
Clinical Evidence
Medium confidence3%
Key findings
- 01 Gels containing rosemary essential oil-loaded lipid nanoparticles demonstrated a significant increase in skin hydration and elasticity in human volunteers when applied twice daily for one week.
- 02 A clinical study indicated comparable therapeutic effectiveness to Minoxidil 2% solution in increasing hair count for androgenetic alopecia, underscoring its broader biological activity.
Transparency
Dusting Analysis
The Formula
Formulation
Conflicts
- Undiluted application on skin (potential for irritation)
- Use by pregnant individuals, those with epilepsy, or high blood pressure (due to stimulating properties)
- Application on sensitive skin (potential for irritation from components like camphor)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Rosmarinus officinalis-derived ingredients, including this oil, are safe for cosmetic use when formulated to be non-sensitizing. A formulation containing 1.5% Rosmarinus Officinalis Leaf Oil was evaluated as non-irritating and non-sensitizing in a Human Repeated Insult Patch Test. While the FDA lists rosemary as Generally Recognized As Safe (GRAS) for food use, topical application requires dilution with a carrier oil to prevent irritation, and a patch test is recommended. Pregnant women, individuals with epilepsy, or those with high blood pressure should avoid its use due to its stimulating properties. Fragrance allergens from rosemary must be declared if their concentration exceeds 0.001% in leave-on products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Rosmarinus Officinalis Leaf/Stem Oil is a valuable botanical ingredient offering clinically supported benefits for skin hydration, elasticity, and overall skin and scalp health, though careful formulation and consideration for sensitive skin and specific health conditions are essential.
Related
Similar Ingredients
Finding similar ingredients…