SYNC Beauty · Ingredient Encyclopedia

Rosemary Leaf Extract

A calming botanical extract from the Mediterranean herb rosemary — rich in rosmarinic acid, it locks in moisture, soothes delicate skin and naturally keeps formulas fresh.

What is rosemary leaf extract?

Rosemary leaf extract is obtained from the needle-like leaves of rosemary (Salvia rosmarinus, formerly Rosmarinus officinalis) — an evergreen Mediterranean herb used in skin care since antiquity. In cosmetics it plays a double role: an antioxidant that cares for the skin, and a natural protector that keeps plant oils and butters in the formula from going rancid.

What’s inside

• Rosmarinic acid — a plant polyphenol with well-documented soothing and antioxidant properties.
• Carnosic acid and carnosol — potent antioxidants that protect skin lipids from oxidation.
• Ursolic acid — supports a smooth, toned skin surface.

Benefits for lips

• Locks in moisture — helps seal hydration delivered by butters and oils.
• Calms and refreshes — soothes lips irritated by weather, dryness or exfoliation.
• Antioxidant support — protects both your skin and the formula itself from oxidative stress.
• Keeps formulas clean — a natural alternative to synthetic stabilisers.

Where you’ll find it at SYNC Beauty

Rosemary leaf extract supports the formulas of our Lip Balm and Tinted Lip Oil, working alongside vitamin E and squalane. All SYNC Beauty formulas are vegan, cruelty-free and made in the UK.

FAQ

Is rosemary extract the same as rosemary essential oil?

No. The extract is a concentrate of the leaf’s antioxidant compounds, while the essential oil is a fragrant volatile oil. The extract is much gentler and is used for skin care, not scent.

Is it suitable for sensitive skin?

Yes — at cosmetic concentrations rosemary leaf extract is considered gentle and soothing, including on delicate lip skin.

Why do clean formulas use rosemary extract?

Its antioxidants naturally protect plant oils in the formula from oxidising, reducing the need for synthetic preservatives.

This article is provided for general information about cosmetic ingredients used by SYNC Beauty and is not medical advice.