Rosemary extract

About Rosemary extract

Rosemary Extract (often written as Rosemary Extract W.S. meaning water-soluble) is a popular ingredient in cosmetic formulations thanks to its antioxidant, antimicrobial, and skin-stimulating properties.

Heres a clear breakdown

What is Rosemary Extract W.S.?

Its a water-soluble extract of the plant Rosmarinus officinalis (rosemary), processed so it can easily mix into water-based cosmetic products like toners, gels, shampoos, and creams.

Key Benefits in Cosmetics

1. Antioxidant Protection

• Rich in compounds like rosmarinic acid
• Helps protect skin from free radical damage
• Supports anti-aging formulations

2. Scalp & Hair Health

• Stimulates blood circulation in the scalp
• Helps reduce dandruff and itchiness
• Often used in hair growth products

3. Antimicrobial Properties

• Helps preserve formulations naturally (mild effect)
• Useful in acne-care and cleansing products

4. Skin Soothing

• Reduces inflammation
• Can help calm irritated or sensitive skin

Common Uses

• Face toners & mists
• Anti-acne gels
• Anti-aging serums
• Hair oils & shampoos
• Herbal creams

Typical Usage Levels

• Usually 0.1% 2% in formulations
• Added in the cool-down phase (below ~40C) to preserve active compounds

Things to Consider

• Can cause sensitivity in very reactive skin (patch test recommended)
• Strong herbal scent (may affect fragrance profile)
• Not a complete preservative needs support from proper preservative systems