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Moumoujus

4-FURANYLETHYL RESORCINOL.

Valuable CAS 1206193-05-6 / ANTIOXIDANT, SKIN CONDITIONING

A synthetic resorcinol derivative engineered to target hyperpigmentation through precise tyrosinase inhibition. This advanced brightening agent demonstrates superior melanin-blocking activity compared to traditional ingredients like kojic acid, while providing additional antioxidant protection against UV-induced pigmentation triggers.

Summary

skin brightening antioxidant tyrosinase inhibitor

Science

Mechanism of Action

Functions as a competitive inhibitor of tyrosinase, the key enzyme controlling melanin production, specifically blocking the conversion of L-DOPA to melanin. Simultaneously provides antioxidant activity that neutralizes free radicals from UV exposure, addressing both primary and secondary pathways of pigmentation formation.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–0.5%
Optimal

0.5%

Key findings

  1. 01 At 0.5% concentration, in-vivo testing showed significant hyperpigmentation reduction and enhanced skin radiance, outperforming 1% kojic acid
  2. 02 Demonstrated superior tyrosinase inhibition in human melanocyte cultures compared to arbutin across 0.1-0.5% range

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.1%
Red flag below
0.05%

Effective concentrations start at 0.1% with optimal results at 0.5%, making dusting unlikely to provide meaningful brightening benefits

The Formula

Formulation

Solubility
Oil
Optimal pH 4 – 6
0 7 14

Stability

Extremely light and oxidation sensitive, prone to yellow/brown discoloration when exposed to air. Requires opaque, airless packaging and stabilization with chelating agents or antioxidants.

Synergies

  • EDTA (chelating)
  • Vitamin E (antioxidant stabilization)

Conflicts

  • Strong oxidizing agents
  • Alkaline pH environments above 7.0
  • Iron-containing ingredients

Safety

Safety Profile

CIR Status
Not reviewed - belongs to resorcinol derivative family
Max tested
0.5%
Sensitization risk Low

Approved in China and EU markets with 0.5% concentration limits for leave-on products due to potential sensitization at higher levels

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

A potent, clinically-backed brightening agent that outperforms traditional alternatives, though formulation complexity and sensitivity concerns limit broader accessibility.

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References

Sources