Rosemary Hydrosol

INCI: Rosmarinus Officinalis Leaf Water

Rosemary hydrosol is the aromatic water obtained from steam distillation of rosemary leaves.
In cosmetics, it is especially valued for scalp care, oily skin management, and antioxidant support.

1. Cosmetic Functions

• Skin-conditioning agent
• Astringent & purifying
• Antioxidant support
• Scalp-stimulating and refreshing
• Natural herbal fragrance

2. Skin Benefits

• Oily & acne-prone skin
• Helps reduce excess sebum
• Refines pores
• Supports clearer-looking skin
• Combination skin
• Balances oil in the T-zone without overdrying
• Problematic skin
• Mild antimicrobial action (supportive, not preservative)
• Useful in acne and blemish-control formulas

3. Hair & Scalp Benefits

• Helps regulate oily scalp
• Supports healthy scalp circulation
• Reduces dandruff-related discomfort
• Popular in hair growth, anti-hair fall, and scalp tonic formulations

4. Typical Usage Levels

• Product Type Recommended Level
• Facial toners & mists 30–100%
• Creams & lotions 10–60% (water phase)
• Gels & serums 20–80%
• Cleansers & shampoos 10–40%
• Scalp sprays & hair tonics 50–100%
• Clay masks 30–100%

5. Compatible Cosmetic Ingredients

• Humectants: glycerin, propylene glycol, panthenol
• Actives: niacinamide, caffeine, zinc PCA
• Soothing agents: allantoin, aloe vera, chamomile extract
• Botanical extracts: green tea, ginseng, nettle

6. Example Formulations

A. Clarifying Facial Toner

• Rosemary hydrosol – 60%
• Geranium hydrosol – 25%
• Glycerin – 3%
• Niacinamide – 3%
• Preservative – q.s.

B. Scalp Growth Tonic

• Rosemary hydrosol – 70%
• Green tea hydrosol – 20%
• Panthenol – 2%
• Caffeine – 0.3%
• Preservative – q.s.

7. Preservation & Stability

Hydrosols must be preserved

Suitable preservatives:

• Liquid Germall Plus
• Geogard ECT
• Phenoxyethanol + Ethylhexylglycerin
• Ideal pH range: 4.5–6.5