01Benefit
Purifying & Clarifying
A documented antimicrobial action helps keep the lash line and lid margin clear of the oil, residue, and microbes a daily cleanser targets.
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Prospela · Ingredient
Rosemary Leaf Oil
By Prospela Team
A purifying, antioxidant-rich botanical for the lash line.
Rosemary (Rosmarinus officinalis) earns its place in a lid-and-lash cleanser for two reasons: it's a rich source of potent plant antioxidants, and it carries a genuine purifying, antimicrobial action. Together they help keep the lash line clear of the oil and debris that collect there.
Its activity concentrates in a few well-studied constituents — carnosic acid, rosmarinic acid, and aromatic essential-oil compounds — that neutralise oxidative stress and discourage the microbes and residue a daily cleanser is designed to lift away.
Key Benefits
What it does.
02Benefit
Antioxidant Defence
Carnosic and rosmarinic acids are among the most potent plant antioxidants, protecting the thin skin around the eyes from everyday oxidative stress.
03Benefit
Soothing Support
Anti-inflammatory constituents help settle the low-grade irritation and redness that come with a reactive lid line.
04Benefit
Aromatic & Refreshing
Its clean, herbaceous aroma gives the wash a fresh, invigorating finish — without added synthetic fragrance.
The Science
The research behind it.
A 2023 review of Rosmarinus officinalis and the skin details its strong antioxidant activity — driven largely by carnosic and rosmarinic acid — and a possible role in calming inflammatory cutaneous conditions.
Formulation research on rosemary confirms a measurable antimicrobial action against common skin bacteria, supporting its use as a purifying agent in cleansers and topical products.
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