INCI Name
PEG-40 Hydrogenated ...
Functions
3 Roles
Sustainability
5/10
Category
emulsifiers
What It Does
PEG-40 Hydrogenated Castor Oil is a polyethylene glycol derivative of hydrogenated castor oil, created by adding approximately 40 moles of ethylene oxide to the saturated fatty acid chains of castor oil. This ingredient is particularly valued for its ability to solubilize essential oils, fragrances, and lipophilic actives in water-based formulations without creating cloudiness. Formulators choose it over non-hydrogenated versions because the saturation of the ricinoleic acid double bonds provides better oxidative stability and a lighter color, making it ideal for clear formulations and products requiring long shelf life.
Technical Properties
HLB Value
13
Hydrophilic-Lipophilic Balance
Ionic Charge
nonionic
Molecular charge type
Viscosity Effect
neutral
Impact on formula thickness
Foaming Ability
low
Lather generation
Ingredient Compatibility
Known Interactions
Ethoxylated surfactants (Ceteareth-*, PEG-*, Polysorbate-*, Poloxamer-*) accumulate peroxides over shelf life via air oxidation of the polyoxyethylene chain. The resulting peroxides degrade DHA, accelerating off-smell and producing orange tones. For DHA formulations, prefer non-ethoxylated emulsifiers: Polyglyceryl-* esters (Polyglyceryl-6 Distearate, Polyglyceryl-10 Stearate), Lecithin, Sucrose Stearate, Olivem 1000 (Cetearyl Olivate + Sorbitan Olivate).
Sustainability Profile
Sustainability Score
Biodegradability
inherently biodegradable
Source
mixed
Feedstock
Derived from hydrogenated castor oil (plant-based) reacted with ethylene oxide (petroleum-derived)
Related Ingredients
Similar emulsifiers to explore
Polyethylene Glycol 150 Distearate
Carbomer Copolymer
Cetearyl Alcohol Ethoxylate
Emulsifying Wax Complex
Olivem 1000
Quick Reference
- Full INCI Name
- PEG-40 Hydrogenated Castor Oil
- Common Name
- PEG-40 Castor Oil
- Category
- emulsifiers