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Moumoujus

ARBUTUS UNEDO LEAF CELL EXTRACT.

Valuable / ANTIOXIDANT, SKIN PROTECTING

Derived from the fruit of the strawberry tree, Arbutus Unedo Leaf Cell Extract is a multi-functional botanical ingredient. It provides comprehensive antioxidant protection against oxidative stress, actively brightens the complexion by targeting hyperpigmentation, and helps refine skin texture for a more balanced appearance.

Summary

Antioxidant Skin Brightening Anti-inflammatory Sebum Control Skin Texture Refinement Anti-aging Melanin Inhibitor

Science

Mechanism of Action

This extract operates through multiple pathways to improve skin health. It acts as a potent antioxidant, neutralizing free radicals and significantly reducing the formation of reactive oxygen species (ROS) to protect cells from environmental damage and mitigate signs of aging. A key component, arbutin, contributes to its anti-tyrosinase activity, which inhibits melanin production for a visible skin brightening and hyperpigmentation-reducing effect. Additionally, it offers moderate anti-inflammatory benefits and its phenolic compounds contribute to formulation stability. Extracts from Arbutus unedo fruits also demonstrate potential for sebum regulation, leading to a mattifying effect and refined pore appearance.

Research

Clinical Evidence

Medium confidence
Effective range 17–100%
Optimal

N/A

Key findings

  1. 01 Demonstrated high antiradical activity at concentrations as low as 17 µg/mL (IC50 in DPPH assay).
  2. 02 Reduced reactive oxygen species (ROS) formation in human dermal fibroblasts and keratinocytes under oxidative stress at concentrations up to 100 µg/mL, without interfering with cell viability.
  3. 03 No cytotoxicity was observed on RAW 264.7 cells between 50-300 µg/mL, nor on porcine PK-15 kidney or HepG2 cells at 11.4, 200, and 400 µg/mL, indicating a favorable safety profile at these effective concentrations.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The extract's phenolic compounds can contribute to overall formulation preservation. Arbutin, a key active component, is reported to be light and pH stable. Optimal stability has been observed in cosmeceutical oil-in-water nanoemulsions, though a specific pH range was not provided for the nanoemulsion itself.

Synergies

  • Phenolic compounds for formulation preservation

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

While formal regulatory assessments by CIR, SCCS, or FDA are not available for this specific extract, in vitro studies suggest a favorable safety profile. No significant cytotoxic effects were observed at concentrations up to 400 µg/mL, and the potential for primary DNA damage was negligible, with total DNA damage remaining within acceptable limits.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Arbutus Unedo Leaf Cell Extract is a valuable ingredient offering a synergistic blend of antioxidant, skin brightening, and skin-balancing properties, supported by promising in vitro safety and efficacy data across various skin types.

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