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Moumoujus

CITRUS UNSHIU FRUIT POWDER.

Valuable CAS 98106-71-9 / ANTIOXIDANT, FRAGRANCE, SKIN CONDITIONING

A nutrient-dense botanical powder derived from the Japanese Satsuma mandarin, engineered to deliver high concentrations of synergistic antioxidants like hesperetin and naringenin. This multi-functional active targets both the visible signs of photoaging and the underlying enzymatic pathways of hyperpigmentation.

Summary

Skin Brightening Antioxidant Protection Collagen Synthesis Support Anti-Inflammatory UV-Damage Mitigation

Science

Mechanism of Action

Functions primarily through the inhibition of tyrosinase, the rate-limiting enzyme in melanin synthesis, to brighten skin and fade age spots. At a cellular level, it suppresses MMP-1 mRNA expression to prevent collagen degradation while simultaneously upregulating collagen biosynthesis. Its antioxidant profile—comprising carotenoids, coumarins, and flavonoids—neutralizes UV-induced oxidative stress and provides anti-inflammatory support by reducing inflammatory chemokines.

Research

Clinical Evidence

High confidence
Effective range 0.25–5%
Optimal

N/A

Key findings

  1. 01 71% of clinical trial participants reported a significant reduction in age spot pigmentation using formulations with Citrus Unshiu active components.
  2. 02 In vitro testing at 2.5–5 mg/mL demonstrated a significant increase in collagen biosynthesis and a reduction in UV-induced photoaging markers.
  3. 03 Immature fruit extracts inhibited lipid accumulation in 3T3-L1 cells via AMPK and MAPK signaling modulation at concentrations of 75-125 µg/mL.

Transparency

Dusting Analysis

Commonly dusted
Min. effective
0.5%
Red flag below
0.05%

Due to its botanical nature and the strict 0.0015% regulatory limit for the phototoxic component 5-MOP in leave-on products, many mass-market brands include this ingredient at negligible 'label-claim' levels. To achieve the documented collagen-boosting and brightening effects, the ingredient must be present in concentrations that maximize bioactive delivery while strictly adhering to safety purity standards.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The active compounds are water-soluble; however, stability is highly dependent on the drying process (temperature sensitivity) during powder production. It should be formulated to ensure a non-sensitizing environment.

Synergies

  • Vitamin C
  • Niacinamide
  • Vitamin E
  • Ferulic Acid

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
0.0015%
Pregnancy
Safe
Sensitization risk Low

The concentration of 5-methoxypsoralen (5-MOP) must not exceed 15 ppm (0.0015%) in leave-on products to prevent phototoxicity. It is classified as GRAS (Generally Recognized as Safe) by the FDA for food use.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A potent botanical active that provides comprehensive brightening and structural support for the skin, though its efficacy is highly dependent on formulation purity and concentration.

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