What is PEG-40 Hydrogenated Castor Oil used for in cosmetics?

It is mainly used as a solubilizer to mix oil-based ingredients into water-based formulas and as an emulsifier to stabilize product formulations.

Is PEG-40 Hydrogenated Castor Oil safe for all skin types?

While generally well-tolerated, individuals with very sensitive or compromised skin may experience mild irritation, especially at higher concentrations.

Home › Ingredients › PEG-40 Hydrogenated Castor Oil

PEG-40 Hydrogenated Castor Oil

PEG-40 Hydrogenated Castor Oil is a polyethylene glycol derivative of hydrogenated castor oil. It functions primarily as a solubilizer, allowing oil-soluble ingredients like fragrances and essential oils to be evenly dispersed in water-based cosmetic products. It also acts as an emulsifier, helping to stabilize oil-in-water formulations, and can contribute to the product's texture.

NoneSolubilizerEvidence: Medium

BenefitNone 0 / 4

RiskLow 1 / 4

Irritation

Sensitization

Eye irritation

Rated by SpottyLabs' ingredient methodology, independent of brands.

Things to watch

Potential for mild irritation in sensitive individuals
May increase penetration of other ingredients

Spot questionable ingredients in seconds

SpottyLabs scans any skincare product and rates every ingredient for benefit, risk and safety. Free and independent — no brand is paying us.

App coming soon

Products with PEG-40 Hydrogenated Castor Oil

Multi‑Peptide Serum for Hair Density

Score 3.8 / 5

Browse all products →

Frequently asked questions

What is PEG-40 Hydrogenated Castor Oil used for in cosmetics?: It is mainly used as a solubilizer to mix oil-based ingredients into water-based formulas and as an emulsifier to stabilize product formulations.
Is PEG-40 Hydrogenated Castor Oil safe for all skin types?: While generally well-tolerated, individuals with very sensitive or compromised skin may experience mild irritation, especially at higher concentrations.