PEG-40 Hydrogenated Castor Oil

• Excellent solubilizer for essential oils, fragrance oils, and lipophilic actives
• Non-ionic, gentle on skin and eyes
• Ideal for making clear sprays, toners, and cleansing waters
• Compatible with both alcohol and water-based formulas
• Also works as an emulsifier and mild surfactant

PEG-40 Hydrogenated Castor Oil is a versatile non-ionic emulsifier derived from castor oil, modified to increase water solubility. Its main cosmetic application is to solubilize small amounts of oils or lipophilic actives (like essential oils or fragrance oils) into water-based systems — making it essential for products like facial mists, toners, perfumes, and micellar waters. It forms clear or semi-clear solutions and improves product texture without altering skin feel. Due to its non-irritating nature, it’s widely used in sensitive-skin formulations including baby care, facial cleansers, and leave-on sprays.

INCI Name: PEG-40 Hydrogenated Castor Oil

CAS Number: 61788-85-0

Solubility: Water-soluble

Add Phase: Cool-down phase

pH Stability: 4.0 – 8.0

Processing Temperature: Below 50°C

Appearance: Pale yellow to amber viscous liquid

Odor: Mild fatty or slightly sweet

Molecular Weight: Variable (avg. ~2,000–3,000 g/mol)

Flash Point: > 100°C

Boiling Point: Decomposes

Density: ~1.05 g/cm³

• Typical usage: 0.5%–10% depending on oil content

• Add at cool-down phase for best solubility results

• Ideal for: Toners, Sprays, Serums, Micellar Waters, Cleansing Oils
  
  

✨ For a clear DIY facial spray with essential oils, pre-mix your chosen essential oil with PEG-40 Hydrogenated Castor Oil (ratio 1:4 to 1:6), then blend this into distilled water or hydrosol. Shake thoroughly and adjust until clarity is achieved. Add preservative to extend shelf life.

✔️ Gentle enough for all skin types including sensitive and baby skin

⚠️ Always conduct a patch test with essential oil blends

1. Clear Aromatherapy Spray

Use PEG-40 Hydrogenated Castor Oil to solubilize lavender and peppermint essential oils into rose water. Add a few drops of glycerin and a natural preservative to make a soothing and fragrant facial mist or pillow spray.

2. Natural Perfume Mist (Alcohol-Free)

Dissolve your fragrance oil blend with PEG-40 and add it to a base of distilled water and witch hazel. Ideal for body splashes and travel-friendly perfumes that don’t dry out the skin.

3. Deep Cleansing Micellar Water

Create a gentle yet effective cleanser by combining PEG-40, hydrosols, and surfactants like Decyl Glucoside. This formulation lifts dirt and oil while maintaining skin hydration.

4. Post-Workout Cooling Spray

Formulate a refreshing body spray with PEG-40 to solubilize eucalyptus and lemon essential oils in water, perfect for gym bags or travel kits.

5. Baby Wipe Liquid Base

Use PEG-40 as a mild solubilizer in baby wipe solutions, blending gentle oils like chamomile or calendula into a water base without irritation.

Q1: Can I use PEG-40 Hydrogenated Castor Oil to make clear facial sprays with essential oils?

A1: Yes! It’s specifically designed to solubilize oils in water and is perfect for facial mists.

Q2: Does it leave any greasy residue?

A2: No, it creates a light, non-greasy finish in water-based formulas when used in proper ratios.

Q3: Is this ingredient safe for sensitive skin?

A3: Yes, it is generally non-irritating and well-tolerated by sensitive skin types.