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CASTOR OIL PROPANEDIOL ESTERS.

Valuable / HAIR CONDITIONING, SKIN CONDITIONING - EMOLLIENT, SOLVENT, SURFACTANT - EMULSIFYING

A 100% plant-derived emollient ester engineered to deliver exceptional optical brilliance to the skin and hair. This bio-based ingredient creates a smooth, light-reflective layer that significantly enhances surface radiance without the heaviness of traditional oils.

Luminosity enhancer Emollient Skin conditioning agent Refractive film former

Science

It functions by forming a uniform molecular film with a high refractive index across the skin’s surface. This film anchors itself through intermolecular interactions with specific keratin amino acids—including tyrosine, arginine, lysine, and aspartic acid—ensuring a durable, light-reflecting finish.


Research

High confidence
Effective range 0.5–1%
Optimal

1%

Key findings

  1. 01 Clinical testing at 1% concentration demonstrates an immediate and measurable increase in skin luminosity and radiance. In hair-specific trials, it reduced volume by 58.6% and decreased frizz by 30x compared to a placebo.

Transparency

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

Because measurable luminosity is achieved at concentrations as low as 1%, brands may include it at negligible levels (less than 0.1%) simply to claim 'Castor Oil' derivatives on the label without providing the refractive benefits.


The Formula

Solubility
Oil
Optimal pH 3 – 12
0 7 14

Stability

Exhibits remarkable stability across an extreme pH spectrum (3 to 12), making it compatible with both highly acidic treatments and alkaline formulations.

Synergies

  • Keratin amino acids
  • Vegetable oils
  • Mineral pigments

Safety

CIR Status
Not reviewed
Max tested
1%
Pregnancy
Safe
Sensitization risk Low

COSMOS approved and compliant with EU Regulation 1223/2009. Toxicological screening including Ames and HET-CAM tests confirm it is non-mutagenic and non-irritating.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

An elite, bio-based optical enhancer that provides immediate, clinically-backed luminosity for dull skin and hair.


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