Hydrogenated Castor Oil

What is Hydrogenated Castor Oil?

Hydrogenated castor oil originates from castor seeds of the Ricinus communis plant, where natural castor oil undergoes hydrogenation—a process adding hydrogen to create a solid, waxy texture at room temperature. This transformation enhances its stability for cosmetic applications, commonly found in lip balms, creams, lotions, and makeup. In formulations, it acts by forming a protective layer on skin to lock in moisture, adjusting product thickness for better spreadability, and bridging oil-water mixtures to prevent separation. Its non-greasy feel makes it ideal for anhydrous products like sticks and balms, contributing to smooth application and long-lasting wear without altering color or scent.

Comedogenic Rating 1/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.
Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Benefits

Provides a softening effect by smoothing skin's surface and aiding moisture retention.

Improves product texture by increasing viscosity for even application and stability.

Supports emulsion integrity, helping maintain consistent cream and lotion consistency.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry or rough skin seeking added smoothness.
People with known allergies to castor plant derivatives.
Users preferring thick, creamy textures in moisturizers and balms.
Those sensitive to waxy emollients in high concentrations.
Those needing stable, non-separating emulsion-based products.
Individuals preferring lightweight, non-occlusive formulas.

Safety Notes

  • Rated low hazard by safety assessments for typical cosmetic use.
  • Minimal risk of pore clogging due to low comedogenic potential.

Frequently Asked Questions about Hydrogenated Castor Oil

What is hydrogenated castor oil made from?

It's produced by hydrogenating castor oil from Ricinus communis seeds, resulting in a solid wax.

Is it safe for sensitive skin?

Generally considered low risk with minimal irritation potential in cosmetics.

What products commonly contain it?

Found in lip balms, moisturizers, creams, and makeup for texture and stability.