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RICE BRAN OIL/HYDROGENATED RICE BRAN OIL ESTERS.

Valuable CAS - / SKIN PROTECTING

Rice Bran Oil and its hydrogenated esters function as highly effective emollients and skin-conditioning agents. These ingredients deliver substantial moisturizing and hydrating benefits, simultaneously strengthening the skin's barrier function and protecting against environmental stressors.

Summary

Emollient Antioxidant Skin-conditioning Moisturizing Hydrating Skin barrier support Anti-inflammatory Skin brightening

Science

Mechanism of Action

This ingredient complex works by providing essential moisturizing and hydrating benefits, attributed to its rich triglyceride structure and diverse fatty acid composition, including oleic, linoleic, palmitic, and stearic acids. It actively improves skin barrier integrity through reducing trans-epidermal water loss (TEWL) and stimulating the synthesis of crucial components like hyaluronic acid and type III collagen. Abundant in natural antioxidants such as tocopherols, tocotrienols, gamma-oryzanol, and phytic acid, it offers robust protection against oxidative stress. The ingredient also demonstrates anti-inflammatory properties, which help to soothe irritation and reduce visible redness. Furthermore, compounds like ferulic acid and gamma-oryzanol contribute to skin brightening and the attenuation of hyperpigmentation. Hydrogenated forms specifically enhance formulation stability and establish a subtle, protective film on the skin's surface.

Research

Clinical Evidence

High confidence
Effective range 0.00001–10%
Optimal

0.5-20%

Key findings

  1. 01 A plant sterol ester derived from rice bran demonstrated an increase in hyaluronic acid and type III collagen production in human fibroblast cells. Topical application of this derivative significantly reduced trans-epidermal water loss (TEWL) and notably improved facial redness and pore appearance over an 8-12 week study period.
  2. 02 Rice Bran Oil (RBO) integrated into nanofibers substantially enhanced cell migration by over 42% and accelerated wound closure by more than 29% in an in vitro study, indicating superior regenerative potential compared to isolated RBO.
  3. 03 Low concentrations of Rice Bran Oil (ranging from 0.0001-0.1 mg/ml) mildly stimulated skin cell proliferation without exhibiting any cytotoxic effects. However, a higher concentration of 1 mg/ml (0.1%) showed cytotoxicity to human skin fibroblast cells.

Transparency

Dusting Analysis

Not commonly dusted

As an oil and ester-based ingredient, Rice Bran Oil and its hydrogenated forms are liquid or semi-solid at room temperature and do not typically exhibit 'dusting' characteristics associated with powdered active ingredients.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Hydrogenated Rice Bran Oil significantly contributes to the stabilization of cosmetic formulas, which can extend product shelf life and maintain ingredient efficacy.

Synergies

  • Enhanced efficacy observed when formulated within advanced delivery systems, such as nanofibers, for targeted regenerative benefits.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
20%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that rice-derived ingredients, including Rice Bran Oil and Hydrogenated Rice Bran Wax (analogous to hydrogenated esters), are safe for cosmetic use within reported concentrations up to 20%. While generally non-irritating and non-sensitizing in animal tests, some clinical studies noted, at most, mild irritation. Individuals with known sensitivities to rice products may experience rare allergic reactions; therefore, a patch test is advisable for sensitive skin. Formulators must ensure contaminants like pesticides and heavy metals remain below established thresholds.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Rice Bran Oil and its hydrogenated esters are a valuable ingredient complex, delivering robust moisturizing, antioxidant, and barrier-support benefits suitable for a comprehensive range of skin types and formulation objectives.

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