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Moumoujus

TORREYA GRANDIS SEED OIL.

Valuable / SKIN CONDITIONING

Derived from the seeds of the Torreya grandis tree, this oil is a rich source of antioxidants and beneficial lipids. It is recognized for its potential to brighten skin by inhibiting melanin production, while also providing moisturizing and anti-aging benefits for a healthier complexion.

Summary

Antioxidant Skin Brightening Melanin Inhibitor Moisturizing Anti-inflammatory (potential) Skin Barrier Support Anti-aging

Science

Mechanism of Action

Torreya grandis seed oil exerts potent antioxidant activity by efficiently scavenging free radicals and reducing ferric power, thereby preventing oxidative damage at the cellular level. Its key mechanism for skin brightening involves dose-dependent in vitro inhibition of tyrosinase, a critical enzyme in melanin synthesis. Furthermore, the oil's rich composition of polyphenols, sterols, and flavonoids may confer anti-inflammatory benefits, supporting skin barrier integrity, enhancing hydration, and contributing to improved skin structure, elasticity, and firmness.

Research

Clinical Evidence

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Inhibitory activity towards monophenolase (a tyrosinase subtype) was observed with an IC50 (half maximal inhibitory concentration) of 227.0 μg/mL.
  2. 02 Inhibitory activity towards diphenolase (another tyrosinase subtype) was observed with an IC50 of 817.5 μg/mL.

Transparency

Dusting Analysis

Not commonly dusted

There is no available data to indicate that Torreya grandis seed oil is commonly 'dusted' or used at excessively low concentrations in formulations, nor are specific dusting thresholds defined.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

As a natural lipid-rich oil, it requires protection from light and air exposure to prevent oxidation, which is crucial for maintaining its stability and efficacy in cosmetic formulations.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

Specific safety evaluations for topical cosmetic use by authoritative bodies like CIR, SCCS, or FDA are not yet available. A study regarding internal consumption in mice linked long-term intake to adverse effects; however, this information is not directly applicable to its safety profile for external, topical skin application.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Torreya grandis seed oil is a valuable ingredient, demonstrating strong in vitro antioxidant and tyrosinase inhibitory activities, making it promising for skin brightening, anti-aging, and barrier enhancement, awaiting comprehensive topical safety reviews.

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